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Finding the Fourth Proportional to 78,957.78, 108,966.92 and 44,511.02

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Solution

The fourth proportional to 78,957.78, 108,966.92 and 44,511.02 is: 61,428.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,957.78 : 108,966.92 = 44,511.02 : x
  2. Step 2: Convert to fraction form
    78,957.78/108,966.92 = 44,511.02/x
  3. Step 3: Cross multiply
    78,957.78x = 108,966.92 × 44,511.02
  4. Step 4: Simplify right side
    78,957.78x = 4,850,227,988.07
  5. Step 5: Solve for x
    x = 4,850,227,988.07/78,957.78
  6. Step 6: Final answer
    x = 61,428.12

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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.