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Finding the Fourth Proportional to 99,262.64, 136,990.84 and 54,559.92

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Solution

The fourth proportional to 99,262.64, 136,990.84 and 54,559.92 is: 75,297.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,262.64 : 136,990.84 = 54,559.92 : x
  2. Step 2: Convert to fraction form
    99,262.64/136,990.84 = 54,559.92/x
  3. Step 3: Cross multiply
    99,262.64x = 136,990.84 × 54,559.92
  4. Step 4: Simplify right side
    99,262.64x = 7,474,209,271.13
  5. Step 5: Solve for x
    x = 7,474,209,271.13/99,262.64
  6. Step 6: Final answer
    x = 75,297.30

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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.