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Finding the Fourth Proportional to 99,253.46, 136,986.10 and 72,484.58

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Solution

The fourth proportional to 99,253.46, 136,986.10 and 72,484.58 is: 100,040.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,253.46 : 136,986.10 = 72,484.58 : x
  2. Step 2: Convert to fraction form
    99,253.46/136,986.10 = 72,484.58/x
  3. Step 3: Cross multiply
    99,253.46x = 136,986.10 × 72,484.58
  4. Step 4: Simplify right side
    99,253.46x = 9,929,379,924.34
  5. Step 5: Solve for x
    x = 9,929,379,924.34/99,253.46
  6. Step 6: Final answer
    x = 100,040.64

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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.