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Finding the Fourth Proportional to 657,718.12, 986,881.65 and 357,841.45

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Solution

The fourth proportional to 657,718.12, 986,881.65 and 357,841.45 is: 536,927.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,718.12 : 986,881.65 = 357,841.45 : x
  2. Step 2: Convert to fraction form
    657,718.12/986,881.65 = 357,841.45/x
  3. Step 3: Cross multiply
    657,718.12x = 986,881.65 × 357,841.45
  4. Step 4: Simplify right side
    657,718.12x = 353,147,160,614.39
  5. Step 5: Solve for x
    x = 353,147,160,614.39/657,718.12
  6. Step 6: Final answer
    x = 536,927.83

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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.