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Finding the Fourth Proportional to 99,714.66, 137,603.72 and 54,393.68

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Solution

The fourth proportional to 99,714.66, 137,603.72 and 54,393.68 is: 75,061.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,714.66 : 137,603.72 = 54,393.68 : x
  2. Step 2: Convert to fraction form
    99,714.66/137,603.72 = 54,393.68/x
  3. Step 3: Cross multiply
    99,714.66x = 137,603.72 × 54,393.68
  4. Step 4: Simplify right side
    99,714.66x = 7,484,771,752.50
  5. Step 5: Solve for x
    x = 7,484,771,752.50/99,714.66
  6. Step 6: Final answer
    x = 75,061.90

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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.