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Finding the Fourth Proportional to 675,951.61, 932,921.86 and 385,657.87

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Solution

The fourth proportional to 675,951.61, 932,921.86 and 385,657.87 is: 532,269.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,951.61 : 932,921.86 = 385,657.87 : x
  2. Step 2: Convert to fraction form
    675,951.61/932,921.86 = 385,657.87/x
  3. Step 3: Cross multiply
    675,951.61x = 932,921.86 × 385,657.87
  4. Step 4: Simplify right side
    675,951.61x = 359,788,657,404.04
  5. Step 5: Solve for x
    x = 359,788,657,404.04/675,951.61
  6. Step 6: Final answer
    x = 532,269.84

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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.