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Finding the Fourth Proportional to 107,091.88, 147,765.46 and 64,652.72

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Solution

The fourth proportional to 107,091.88, 147,765.46 and 64,652.72 is: 89,207.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,091.88 : 147,765.46 = 64,652.72 : x
  2. Step 2: Convert to fraction form
    107,091.88/147,765.46 = 64,652.72/x
  3. Step 3: Cross multiply
    107,091.88x = 147,765.46 × 64,652.72
  4. Step 4: Simplify right side
    107,091.88x = 9,553,438,911.05
  5. Step 5: Solve for x
    x = 9,553,438,911.05/107,091.88
  6. Step 6: Final answer
    x = 89,207.87

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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.