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Finding the Fourth Proportional to 110,974.64, 153,129.74 and 63,218.79

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Solution

The fourth proportional to 110,974.64, 153,129.74 and 63,218.79 is: 87,233.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,974.64 : 153,129.74 = 63,218.79 : x
  2. Step 2: Convert to fraction form
    110,974.64/153,129.74 = 63,218.79/x
  3. Step 3: Cross multiply
    110,974.64x = 153,129.74 × 63,218.79
  4. Step 4: Simplify right side
    110,974.64x = 9,680,676,559.72
  5. Step 5: Solve for x
    x = 9,680,676,559.72/110,974.64
  6. Step 6: Final answer
    x = 87,233.24

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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.