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Finding the Fourth Proportional to 98,624.64, 136,101.44 and 53,912.64

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Solution

The fourth proportional to 98,624.64, 136,101.44 and 53,912.64 is: 74,399.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,624.64 : 136,101.44 = 53,912.64 : x
  2. Step 2: Convert to fraction form
    98,624.64/136,101.44 = 53,912.64/x
  3. Step 3: Cross multiply
    98,624.64x = 136,101.44 × 53,912.64
  4. Step 4: Simplify right side
    98,624.64x = 7,337,587,938.20
  5. Step 5: Solve for x
    x = 7,337,587,938.20/98,624.64
  6. Step 6: Final answer
    x = 74,399.14

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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.