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Finding the Fourth Proportional to 708,421.32, 977,592.78 and 386,124.48

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Solution

The fourth proportional to 708,421.32, 977,592.78 and 386,124.48 is: 532,836.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,421.32 : 977,592.78 = 386,124.48 : x
  2. Step 2: Convert to fraction form
    708,421.32/977,592.78 = 386,124.48/x
  3. Step 3: Cross multiply
    708,421.32x = 977,592.78 × 386,124.48
  4. Step 4: Simplify right side
    708,421.32x = 377,472,503,829.25
  5. Step 5: Solve for x
    x = 377,472,503,829.25/708,421.32
  6. Step 6: Final answer
    x = 532,836.17

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