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Finding the Fourth Proportional to 84,388.40, 126,471.87 and 62,097.40

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Solution

The fourth proportional to 84,388.40, 126,471.87 and 62,097.40 is: 93,064.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,388.40 : 126,471.87 = 62,097.40 : x
  2. Step 2: Convert to fraction form
    84,388.40/126,471.87 = 62,097.40/x
  3. Step 3: Cross multiply
    84,388.40x = 126,471.87 × 62,097.40
  4. Step 4: Simplify right side
    84,388.40x = 7,853,574,300.14
  5. Step 5: Solve for x
    x = 7,853,574,300.14/84,388.40
  6. Step 6: Final answer
    x = 93,064.62

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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.