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Finding the Fourth Proportional to 99,393.52, 149,073.54 and 28,311.16

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Solution

The fourth proportional to 99,393.52, 149,073.54 and 28,311.16 is: 42,461.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,393.52 : 149,073.54 = 28,311.16 : x
  2. Step 2: Convert to fraction form
    99,393.52/149,073.54 = 28,311.16/x
  3. Step 3: Cross multiply
    99,393.52x = 149,073.54 × 28,311.16
  4. Step 4: Simplify right side
    99,393.52x = 4,220,444,842.71
  5. Step 5: Solve for x
    x = 4,220,444,842.71/99,393.52
  6. Step 6: Final answer
    x = 42,461.97

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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.