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Finding the Fourth Proportional to 99,562.86, 137,392.01 and 54,240.63

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Solution

The fourth proportional to 99,562.86, 137,392.01 and 54,240.63 is: 74,849.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,562.86 : 137,392.01 = 54,240.63 : x
  2. Step 2: Convert to fraction form
    99,562.86/137,392.01 = 54,240.63/x
  3. Step 3: Cross multiply
    99,562.86x = 137,392.01 × 54,240.63
  4. Step 4: Simplify right side
    99,562.86x = 7,452,228,596.35
  5. Step 5: Solve for x
    x = 7,452,228,596.35/99,562.86
  6. Step 6: Final answer
    x = 74,849.48

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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.