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Finding the Fourth Proportional to 99,354.66, 137,040.03 and 67,468.20

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Solution

The fourth proportional to 99,354.66, 137,040.03 and 67,468.20 is: 93,058.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,354.66 : 137,040.03 = 67,468.20 : x
  2. Step 2: Convert to fraction form
    99,354.66/137,040.03 = 67,468.20/x
  3. Step 3: Cross multiply
    99,354.66x = 137,040.03 × 67,468.20
  4. Step 4: Simplify right side
    99,354.66x = 9,245,844,152.05
  5. Step 5: Solve for x
    x = 9,245,844,152.05/99,354.66
  6. Step 6: Final answer
    x = 93,058.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.