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Finding the Fourth Proportional to 78,248.43, 107,987.40 and 44,259.93

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Solution

The fourth proportional to 78,248.43, 107,987.40 and 44,259.93 is: 61,081.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,248.43 : 107,987.40 = 44,259.93 : x
  2. Step 2: Convert to fraction form
    78,248.43/107,987.40 = 44,259.93/x
  3. Step 3: Cross multiply
    78,248.43x = 107,987.40 × 44,259.93
  4. Step 4: Simplify right side
    78,248.43x = 4,779,514,764.88
  5. Step 5: Solve for x
    x = 4,779,514,764.88/78,248.43
  6. Step 6: Final answer
    x = 61,081.29

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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.