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Finding the Fourth Proportional to 691,861.59, 954,732.56 and 385,969.95

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Solution

The fourth proportional to 691,861.59, 954,732.56 and 385,969.95 is: 532,618.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,861.59 : 954,732.56 = 385,969.95 : x
  2. Step 2: Convert to fraction form
    691,861.59/954,732.56 = 385,969.95/x
  3. Step 3: Cross multiply
    691,861.59x = 954,732.56 × 385,969.95
  4. Step 4: Simplify right side
    691,861.59x = 368,498,076,516.72
  5. Step 5: Solve for x
    x = 368,498,076,516.72/691,861.59
  6. Step 6: Final answer
    x = 532,618.20

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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.