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Finding the Fourth Proportional to 157,620.64, 236,370.72 and 67,655.20

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Solution

The fourth proportional to 157,620.64, 236,370.72 and 67,655.20 is: 101,456.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,620.64 : 236,370.72 = 67,655.20 : x
  2. Step 2: Convert to fraction form
    157,620.64/236,370.72 = 67,655.20/x
  3. Step 3: Cross multiply
    157,620.64x = 236,370.72 × 67,655.20
  4. Step 4: Simplify right side
    157,620.64x = 15,991,708,335.74
  5. Step 5: Solve for x
    x = 15,991,708,335.74/157,620.64
  6. Step 6: Final answer
    x = 101,456.94

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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.