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Finding the Fourth Proportional to 657,612.20, 986,807.10 and 479,671.40

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Solution

The fourth proportional to 657,612.20, 986,807.10 and 479,671.40 is: 719,790.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,612.20 : 986,807.10 = 479,671.40 : x
  2. Step 2: Convert to fraction form
    657,612.20/986,807.10 = 479,671.40/x
  3. Step 3: Cross multiply
    657,612.20x = 986,807.10 × 479,671.40
  4. Step 4: Simplify right side
    657,612.20x = 473,343,143,186.94
  5. Step 5: Solve for x
    x = 473,343,143,186.94/657,612.20
  6. Step 6: Final answer
    x = 719,790.70

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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.