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Finding the Fourth Proportional to 135,888.61, 187,520.01 and 75,463.11

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Solution

The fourth proportional to 135,888.61, 187,520.01 and 75,463.11 is: 104,135.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,888.61 : 187,520.01 = 75,463.11 : x
  2. Step 2: Convert to fraction form
    135,888.61/187,520.01 = 75,463.11/x
  3. Step 3: Cross multiply
    135,888.61x = 187,520.01 × 75,463.11
  4. Step 4: Simplify right side
    135,888.61x = 14,150,843,141.83
  5. Step 5: Solve for x
    x = 14,150,843,141.83/135,888.61
  6. Step 6: Final answer
    x = 104,135.61

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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.