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Finding the Fourth Proportional to 73,125.80, 109,688.70 and 26,412.20

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Solution

The fourth proportional to 73,125.80, 109,688.70 and 26,412.20 is: 39,618.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,125.80 : 109,688.70 = 26,412.20 : x
  2. Step 2: Convert to fraction form
    73,125.80/109,688.70 = 26,412.20/x
  3. Step 3: Cross multiply
    73,125.80x = 109,688.70 × 26,412.20
  4. Step 4: Simplify right side
    73,125.80x = 2,897,119,882.14
  5. Step 5: Solve for x
    x = 2,897,119,882.14/73,125.80
  6. Step 6: Final answer
    x = 39,618.30

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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.