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Finding the Fourth Proportional to 99,608.86, 137,461.92 and 54,289.33

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Solution

The fourth proportional to 99,608.86, 137,461.92 and 54,289.33 is: 74,920.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,608.86 : 137,461.92 = 54,289.33 : x
  2. Step 2: Convert to fraction form
    99,608.86/137,461.92 = 54,289.33/x
  3. Step 3: Cross multiply
    99,608.86x = 137,461.92 × 54,289.33
  4. Step 4: Simplify right side
    99,608.86x = 7,462,715,224.18
  5. Step 5: Solve for x
    x = 7,462,715,224.18/99,608.86
  6. Step 6: Final answer
    x = 74,920.20

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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.