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Finding the Fourth Proportional to 99,502.66, 149,326.13 and 74,609.74

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Solution

The fourth proportional to 99,502.66, 149,326.13 and 74,609.74 is: 111,968.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,502.66 : 149,326.13 = 74,609.74 : x
  2. Step 2: Convert to fraction form
    99,502.66/149,326.13 = 74,609.74/x
  3. Step 3: Cross multiply
    99,502.66x = 149,326.13 × 74,609.74
  4. Step 4: Simplify right side
    99,502.66x = 11,141,184,107.69
  5. Step 5: Solve for x
    x = 11,141,184,107.69/99,502.66
  6. Step 6: Final answer
    x = 111,968.70

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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.