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Finding the Fourth Proportional to 91,041.92, 125,637.92 and 50,754.87

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Solution

The fourth proportional to 91,041.92, 125,637.92 and 50,754.87 is: 70,041.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,041.92 : 125,637.92 = 50,754.87 : x
  2. Step 2: Convert to fraction form
    91,041.92/125,637.92 = 50,754.87/x
  3. Step 3: Cross multiply
    91,041.92x = 125,637.92 × 50,754.87
  4. Step 4: Simplify right side
    91,041.92x = 6,376,736,423.56
  5. Step 5: Solve for x
    x = 6,376,736,423.56/91,041.92
  6. Step 6: Final answer
    x = 70,041.77

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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.