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Finding the Fourth Proportional to 99,321.66, 148,935.61 and 36,097.74

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Solution

The fourth proportional to 99,321.66, 148,935.61 and 36,097.74 is: 54,129.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,321.66 : 148,935.61 = 36,097.74 : x
  2. Step 2: Convert to fraction form
    99,321.66/148,935.61 = 36,097.74/x
  3. Step 3: Cross multiply
    99,321.66x = 148,935.61 × 36,097.74
  4. Step 4: Simplify right side
    99,321.66x = 5,376,238,926.52
  5. Step 5: Solve for x
    x = 5,376,238,926.52/99,321.66
  6. Step 6: Final answer
    x = 54,129.57

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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.