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Finding the Fourth Proportional to 69,843.88, 96,428.10 and 48,615.40

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Solution

The fourth proportional to 69,843.88, 96,428.10 and 48,615.40 is: 67,119.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,843.88 : 96,428.10 = 48,615.40 : x
  2. Step 2: Convert to fraction form
    69,843.88/96,428.10 = 48,615.40/x
  3. Step 3: Cross multiply
    69,843.88x = 96,428.10 × 48,615.40
  4. Step 4: Simplify right side
    69,843.88x = 4,687,890,652.74
  5. Step 5: Solve for x
    x = 4,687,890,652.74/69,843.88
  6. Step 6: Final answer
    x = 67,119.56

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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.