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Finding the Fourth Proportional to 664,849,216.80, 997,273,825.20 and 664,849,216.80

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Solution

The fourth proportional to 664,849,216.80, 997,273,825.20 and 664,849,216.80 is: 997,273,825.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,849,216.80 : 997,273,825.20 = 664,849,216.80 : x
  2. Step 2: Convert to fraction form
    664,849,216.80/997,273,825.20 = 664,849,216.80/x
  3. Step 3: Cross multiply
    664,849,216.80x = 997,273,825.20 × 664,849,216.80
  4. Step 4: Simplify right side
    664,849,216.80x = 663,036,721,619,360,128
  5. Step 5: Solve for x
    x = 663,036,721,619,360,128/664,849,216.80
  6. Step 6: Final answer
    x = 997,273,825.20

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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.