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Finding the Fourth Proportional to 78,253.74, 107,988.84 and 44,260.88

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Solution

The fourth proportional to 78,253.74, 107,988.84 and 44,260.88 is: 61,079.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,253.74 : 107,988.84 = 44,260.88 : x
  2. Step 2: Convert to fraction form
    78,253.74/107,988.84 = 44,260.88/x
  3. Step 3: Cross multiply
    78,253.74x = 107,988.84 × 44,260.88
  4. Step 4: Simplify right side
    78,253.74x = 4,779,680,548.64
  5. Step 5: Solve for x
    x = 4,779,680,548.64/78,253.74
  6. Step 6: Final answer
    x = 61,079.26

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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.