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Finding the Fourth Proportional to 99,458.70, 148,823.55 and 73,214.70

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Solution

The fourth proportional to 99,458.70, 148,823.55 and 73,214.70 is: 109,553.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,458.70 : 148,823.55 = 73,214.70 : x
  2. Step 2: Convert to fraction form
    99,458.70/148,823.55 = 73,214.70/x
  3. Step 3: Cross multiply
    99,458.70x = 148,823.55 × 73,214.70
  4. Step 4: Simplify right side
    99,458.70x = 10,896,071,566.19
  5. Step 5: Solve for x
    x = 10,896,071,566.19/99,458.70
  6. Step 6: Final answer
    x = 109,553.73

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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.