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Finding the Fourth Proportional to 117,618.80, 176,402.28 and 75,372.08

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Solution

The fourth proportional to 117,618.80, 176,402.28 and 75,372.08 is: 113,041.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,618.80 : 176,402.28 = 75,372.08 : x
  2. Step 2: Convert to fraction form
    117,618.80/176,402.28 = 75,372.08/x
  3. Step 3: Cross multiply
    117,618.80x = 176,402.28 × 75,372.08
  4. Step 4: Simplify right side
    117,618.80x = 13,295,806,760.34
  5. Step 5: Solve for x
    x = 13,295,806,760.34/117,618.80
  6. Step 6: Final answer
    x = 113,041.51

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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.