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Finding the Fourth Proportional to 99,661.92, 149,475.60 and 37,319.52

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Solution

The fourth proportional to 99,661.92, 149,475.60 and 37,319.52 is: 55,972.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,661.92 : 149,475.60 = 37,319.52 : x
  2. Step 2: Convert to fraction form
    99,661.92/149,475.60 = 37,319.52/x
  3. Step 3: Cross multiply
    99,661.92x = 149,475.60 × 37,319.52
  4. Step 4: Simplify right side
    99,661.92x = 5,578,357,643.71
  5. Step 5: Solve for x
    x = 5,578,357,643.71/99,661.92
  6. Step 6: Final answer
    x = 55,972.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.