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Finding the Fourth Proportional to 78,607.52, 117,924.08 and 23,209.12

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Solution

The fourth proportional to 78,607.52, 117,924.08 and 23,209.12 is: 34,817.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,607.52 : 117,924.08 = 23,209.12 : x
  2. Step 2: Convert to fraction form
    78,607.52/117,924.08 = 23,209.12/x
  3. Step 3: Cross multiply
    78,607.52x = 117,924.08 × 23,209.12
  4. Step 4: Simplify right side
    78,607.52x = 2,736,914,123.61
  5. Step 5: Solve for x
    x = 2,736,914,123.61/78,607.52
  6. Step 6: Final answer
    x = 34,817.46

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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.