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Finding the Fourth Proportional to 86,695.50, 119,649.53 and 48,972.18

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Solution

The fourth proportional to 86,695.50, 119,649.53 and 48,972.18 is: 67,587.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,695.50 : 119,649.53 = 48,972.18 : x
  2. Step 2: Convert to fraction form
    86,695.50/119,649.53 = 48,972.18/x
  3. Step 3: Cross multiply
    86,695.50x = 119,649.53 × 48,972.18
  4. Step 4: Simplify right side
    86,695.50x = 5,859,498,320.08
  5. Step 5: Solve for x
    x = 5,859,498,320.08/86,695.50
  6. Step 6: Final answer
    x = 67,587.11

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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.