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Finding the Fourth Proportional to 136,197.91, 187,947.10 and 75,763.81

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Solution

The fourth proportional to 136,197.91, 187,947.10 and 75,763.81 is: 104,550.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,197.91 : 187,947.10 = 75,763.81 : x
  2. Step 2: Convert to fraction form
    136,197.91/187,947.10 = 75,763.81/x
  3. Step 3: Cross multiply
    136,197.91x = 187,947.10 × 75,763.81
  4. Step 4: Simplify right side
    136,197.91x = 14,239,588,374.45
  5. Step 5: Solve for x
    x = 14,239,588,374.45/136,197.91
  6. Step 6: Final answer
    x = 104,550.71

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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.