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Finding the Fourth Proportional to 109,672.47, 151,348.06 and 59,371.47

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Solution

The fourth proportional to 109,672.47, 151,348.06 and 59,371.47 is: 81,932.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,672.47 : 151,348.06 = 59,371.47 : x
  2. Step 2: Convert to fraction form
    109,672.47/151,348.06 = 59,371.47/x
  3. Step 3: Cross multiply
    109,672.47x = 151,348.06 × 59,371.47
  4. Step 4: Simplify right side
    109,672.47x = 8,985,756,803.85
  5. Step 5: Solve for x
    x = 8,985,756,803.85/109,672.47
  6. Step 6: Final answer
    x = 81,932.66

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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.