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Finding the Fourth Proportional to 657,553.20, 986,718.60 and 479,612.40

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Solution

The fourth proportional to 657,553.20, 986,718.60 and 479,612.40 is: 719,702.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,553.20 : 986,718.60 = 479,612.40 : x
  2. Step 2: Convert to fraction form
    657,553.20/986,718.60 = 479,612.40/x
  3. Step 3: Cross multiply
    657,553.20x = 986,718.60 × 479,612.40
  4. Step 4: Simplify right side
    657,553.20x = 473,242,475,870.64
  5. Step 5: Solve for x
    x = 473,242,475,870.64/657,553.20
  6. Step 6: Final answer
    x = 719,702.19

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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.