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Finding the Fourth Proportional to 657,191.77, 906,952.21 and 370,711.78

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Solution

The fourth proportional to 657,191.77, 906,952.21 and 370,711.78 is: 511,597.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,191.77 : 906,952.21 = 370,711.78 : x
  2. Step 2: Convert to fraction form
    657,191.77/906,952.21 = 370,711.78/x
  3. Step 3: Cross multiply
    657,191.77x = 906,952.21 × 370,711.78
  4. Step 4: Simplify right side
    657,191.77x = 336,217,864,949.87
  5. Step 5: Solve for x
    x = 336,217,864,949.87/657,191.77
  6. Step 6: Final answer
    x = 511,597.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.