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Finding the Fourth Proportional to 672,648,458.40, 1,008,972,687.60 and 500,461,574.40

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Solution

The fourth proportional to 672,648,458.40, 1,008,972,687.60 and 500,461,574.40 is: 750,692,361.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,648,458.40 : 1,008,972,687.60 = 500,461,574.40 : x
  2. Step 2: Convert to fraction form
    672,648,458.40/1,008,972,687.60 = 500,461,574.40/x
  3. Step 3: Cross multiply
    672,648,458.40x = 1,008,972,687.60 × 500,461,574.40
  4. Step 4: Simplify right side
    672,648,458.40x = 504,952,059,762,895,360
  5. Step 5: Solve for x
    x = 504,952,059,762,895,360/672,648,458.40
  6. Step 6: Final answer
    x = 750,692,361.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.