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Finding the Fourth Proportional to 708,468.11, 977,696.24 and 386,178.27

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Solution

The fourth proportional to 708,468.11, 977,696.24 and 386,178.27 is: 532,931.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,468.11 : 977,696.24 = 386,178.27 : x
  2. Step 2: Convert to fraction form
    708,468.11/977,696.24 = 386,178.27/x
  3. Step 3: Cross multiply
    708,468.11x = 977,696.24 × 386,178.27
  4. Step 4: Simplify right side
    708,468.11x = 377,565,042,548.71
  5. Step 5: Solve for x
    x = 377,565,042,548.71/708,468.11
  6. Step 6: Final answer
    x = 532,931.60

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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.