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Finding the Fourth Proportional to 54,176.70, 81,106.65 and 38,624.70

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Solution

The fourth proportional to 54,176.70, 81,106.65 and 38,624.70 is: 57,824.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,176.70 : 81,106.65 = 38,624.70 : x
  2. Step 2: Convert to fraction form
    54,176.70/81,106.65 = 38,624.70/x
  3. Step 3: Cross multiply
    54,176.70x = 81,106.65 × 38,624.70
  4. Step 4: Simplify right side
    54,176.70x = 3,132,720,024.26
  5. Step 5: Solve for x
    x = 3,132,720,024.26/54,176.70
  6. Step 6: Final answer
    x = 57,824.12

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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.