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Finding the Fourth Proportional to 87,503.90, 120,752.17 and 53,499.69

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Solution

The fourth proportional to 87,503.90, 120,752.17 and 53,499.69 is: 73,827.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,503.90 : 120,752.17 = 53,499.69 : x
  2. Step 2: Convert to fraction form
    87,503.90/120,752.17 = 53,499.69/x
  3. Step 3: Cross multiply
    87,503.90x = 120,752.17 × 53,499.69
  4. Step 4: Simplify right side
    87,503.90x = 6,460,203,528.08
  5. Step 5: Solve for x
    x = 6,460,203,528.08/87,503.90
  6. Step 6: Final answer
    x = 73,827.61

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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.