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Finding the Fourth Proportional to 87,080.92, 120,197.22 and 56,870.81

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Solution

The fourth proportional to 87,080.92, 120,197.22 and 56,870.81 is: 78,498.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,080.92 : 120,197.22 = 56,870.81 : x
  2. Step 2: Convert to fraction form
    87,080.92/120,197.22 = 56,870.81/x
  3. Step 3: Cross multiply
    87,080.92x = 120,197.22 × 56,870.81
  4. Step 4: Simplify right side
    87,080.92x = 6,835,712,897.64
  5. Step 5: Solve for x
    x = 6,835,712,897.64/87,080.92
  6. Step 6: Final answer
    x = 78,498.40

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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.