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Finding the Fourth Proportional to 660,108.20, 992,276.40 and 613,306.40

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Solution

The fourth proportional to 660,108.20, 992,276.40 and 613,306.40 is: 921,923.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,108.20 : 992,276.40 = 613,306.40 : x
  2. Step 2: Convert to fraction form
    660,108.20/992,276.40 = 613,306.40/x
  3. Step 3: Cross multiply
    660,108.20x = 992,276.40 × 613,306.40
  4. Step 4: Simplify right side
    660,108.20x = 608,569,466,688.96
  5. Step 5: Solve for x
    x = 608,569,466,688.96/660,108.20
  6. Step 6: Final answer
    x = 921,923.81

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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.