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Finding the Fourth Proportional to 108,065.52, 149,130.60 and 60,318.88

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Solution

The fourth proportional to 108,065.52, 149,130.60 and 60,318.88 is: 83,240.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,065.52 : 149,130.60 = 60,318.88 : x
  2. Step 2: Convert to fraction form
    108,065.52/149,130.60 = 60,318.88/x
  3. Step 3: Cross multiply
    108,065.52x = 149,130.60 × 60,318.88
  4. Step 4: Simplify right side
    108,065.52x = 8,995,390,765.73
  5. Step 5: Solve for x
    x = 8,995,390,765.73/108,065.52
  6. Step 6: Final answer
    x = 83,240.16

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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.