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Finding the Fourth Proportional to 71,208.47, 106,836.08 and 29,123.95

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Solution

The fourth proportional to 71,208.47, 106,836.08 and 29,123.95 is: 43,695.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,208.47 : 106,836.08 = 29,123.95 : x
  2. Step 2: Convert to fraction form
    71,208.47/106,836.08 = 29,123.95/x
  3. Step 3: Cross multiply
    71,208.47x = 106,836.08 × 29,123.95
  4. Step 4: Simplify right side
    71,208.47x = 3,111,488,239.41
  5. Step 5: Solve for x
    x = 3,111,488,239.41/71,208.47
  6. Step 6: Final answer
    x = 43,695.48

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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.