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Finding the Fourth Proportional to 107,059.52, 147,757.86 and 61,728.64

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Solution

The fourth proportional to 107,059.52, 147,757.86 and 61,728.64 is: 85,194.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,059.52 : 147,757.86 = 61,728.64 : x
  2. Step 2: Convert to fraction form
    107,059.52/147,757.86 = 61,728.64/x
  3. Step 3: Cross multiply
    107,059.52x = 147,757.86 × 61,728.64
  4. Step 4: Simplify right side
    107,059.52x = 9,120,891,008.32
  5. Step 5: Solve for x
    x = 9,120,891,008.32/107,059.52
  6. Step 6: Final answer
    x = 85,194.58

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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.