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Finding the Fourth Proportional to 86,937.92, 130,008.36 and 64,766.72

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Solution

The fourth proportional to 86,937.92, 130,008.36 and 64,766.72 is: 96,853.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,937.92 : 130,008.36 = 64,766.72 : x
  2. Step 2: Convert to fraction form
    86,937.92/130,008.36 = 64,766.72/x
  3. Step 3: Cross multiply
    86,937.92x = 130,008.36 × 64,766.72
  4. Step 4: Simplify right side
    86,937.92x = 8,420,215,049.78
  5. Step 5: Solve for x
    x = 8,420,215,049.78/86,937.92
  6. Step 6: Final answer
    x = 96,853.19

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1.5x scale

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.