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Finding the Fourth Proportional to 73,061.20, 100,824.78 and 39,527.20

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Solution

The fourth proportional to 73,061.20, 100,824.78 and 39,527.20 is: 54,547.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,061.20 : 100,824.78 = 39,527.20 : x
  2. Step 2: Convert to fraction form
    73,061.20/100,824.78 = 39,527.20/x
  3. Step 3: Cross multiply
    73,061.20x = 100,824.78 × 39,527.20
  4. Step 4: Simplify right side
    73,061.20x = 3,985,321,244.02
  5. Step 5: Solve for x
    x = 3,985,321,244.02/73,061.20
  6. Step 6: Final answer
    x = 54,547.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.