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Finding the Fourth Proportional to 78,672.30, 118,008.56 and 60,058.02

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Solution

The fourth proportional to 78,672.30, 118,008.56 and 60,058.02 is: 90,087.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,672.30 : 118,008.56 = 60,058.02 : x
  2. Step 2: Convert to fraction form
    78,672.30/118,008.56 = 60,058.02/x
  3. Step 3: Cross multiply
    78,672.30x = 118,008.56 × 60,058.02
  4. Step 4: Simplify right side
    78,672.30x = 7,087,361,049.33
  5. Step 5: Solve for x
    x = 7,087,361,049.33/78,672.30
  6. Step 6: Final answer
    x = 90,087.13

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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.