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Finding the Fourth Proportional to 78,353.79, 117,534.78 and 59,663.14

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Solution

The fourth proportional to 78,353.79, 117,534.78 and 59,663.14 is: 89,497.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,353.79 : 117,534.78 = 59,663.14 : x
  2. Step 2: Convert to fraction form
    78,353.79/117,534.78 = 59,663.14/x
  3. Step 3: Cross multiply
    78,353.79x = 117,534.78 × 59,663.14
  4. Step 4: Simplify right side
    78,353.79x = 7,012,493,446.34
  5. Step 5: Solve for x
    x = 7,012,493,446.34/78,353.79
  6. Step 6: Final answer
    x = 89,497.83

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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.