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Finding the Fourth Proportional to 573,132.40, 859,698.60 and 440,681.20

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Solution

The fourth proportional to 573,132.40, 859,698.60 and 440,681.20 is: 661,021.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,132.40 : 859,698.60 = 440,681.20 : x
  2. Step 2: Convert to fraction form
    573,132.40/859,698.60 = 440,681.20/x
  3. Step 3: Cross multiply
    573,132.40x = 859,698.60 × 440,681.20
  4. Step 4: Simplify right side
    573,132.40x = 378,853,010,686.32
  5. Step 5: Solve for x
    x = 378,853,010,686.32/573,132.40
  6. Step 6: Final answer
    x = 661,021.80

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Similar ratio
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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.