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Finding the Fourth Proportional to 87,398.88, 120,610.48 and 49,672.16

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Solution

The fourth proportional to 87,398.88, 120,610.48 and 49,672.16 is: 68,547.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,398.88 : 120,610.48 = 49,672.16 : x
  2. Step 2: Convert to fraction form
    87,398.88/120,610.48 = 49,672.16/x
  3. Step 3: Cross multiply
    87,398.88x = 120,610.48 × 49,672.16
  4. Step 4: Simplify right side
    87,398.88x = 5,990,983,060.24
  5. Step 5: Solve for x
    x = 5,990,983,060.24/87,398.88
  6. Step 6: Final answer
    x = 68,547.60

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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.