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Finding the Fourth Proportional to 87,000.66, 120,069.34 and 48,766.70

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Solution

The fourth proportional to 87,000.66, 120,069.34 and 48,766.70 is: 67,302.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,000.66 : 120,069.34 = 48,766.70 : x
  2. Step 2: Convert to fraction form
    87,000.66/120,069.34 = 48,766.70/x
  3. Step 3: Cross multiply
    87,000.66x = 120,069.34 × 48,766.70
  4. Step 4: Simplify right side
    87,000.66x = 5,855,385,661.23
  5. Step 5: Solve for x
    x = 5,855,385,661.23/87,000.66
  6. Step 6: Final answer
    x = 67,302.77

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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.