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Finding the Fourth Proportional to 94,006.78, 129,721.14 and 53,712.52

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Solution

The fourth proportional to 94,006.78, 129,721.14 and 53,712.52 is: 74,118.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,006.78 : 129,721.14 = 53,712.52 : x
  2. Step 2: Convert to fraction form
    94,006.78/129,721.14 = 53,712.52/x
  3. Step 3: Cross multiply
    94,006.78x = 129,721.14 × 53,712.52
  4. Step 4: Simplify right side
    94,006.78x = 6,967,649,326.67
  5. Step 5: Solve for x
    x = 6,967,649,326.67/94,006.78
  6. Step 6: Final answer
    x = 74,118.58

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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.