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Finding the Fourth Proportional to 99,321.14, 137,063.14 and 54,609.14

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Solution

The fourth proportional to 99,321.14, 137,063.14 and 54,609.14 is: 75,360.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,321.14 : 137,063.14 = 54,609.14 : x
  2. Step 2: Convert to fraction form
    99,321.14/137,063.14 = 54,609.14/x
  3. Step 3: Cross multiply
    99,321.14x = 137,063.14 × 54,609.14
  4. Step 4: Simplify right side
    99,321.14x = 7,484,900,201.10
  5. Step 5: Solve for x
    x = 7,484,900,201.10/99,321.14
  6. Step 6: Final answer
    x = 75,360.59

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1.5x scale

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.