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Finding the Fourth Proportional to 125,196.71, 187,806.74 and 40,957.38

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Solution

The fourth proportional to 125,196.71, 187,806.74 and 40,957.38 is: 61,439.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,196.71 : 187,806.74 = 40,957.38 : x
  2. Step 2: Convert to fraction form
    125,196.71/187,806.74 = 40,957.38/x
  3. Step 3: Cross multiply
    125,196.71x = 187,806.74 × 40,957.38
  4. Step 4: Simplify right side
    125,196.71x = 7,692,071,811.95
  5. Step 5: Solve for x
    x = 7,692,071,811.95/125,196.71
  6. Step 6: Final answer
    x = 61,439.89

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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.