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Finding the Fourth Proportional to 78,253.15, 107,991.79 and 44,260.97

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Solution

The fourth proportional to 78,253.15, 107,991.79 and 44,260.97 is: 61,081.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,253.15 : 107,991.79 = 44,260.97 : x
  2. Step 2: Convert to fraction form
    78,253.15/107,991.79 = 44,260.97/x
  3. Step 3: Cross multiply
    78,253.15x = 107,991.79 × 44,260.97
  4. Step 4: Simplify right side
    78,253.15x = 4,779,821,536.76
  5. Step 5: Solve for x
    x = 4,779,821,536.76/78,253.15
  6. Step 6: Final answer
    x = 61,081.52

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1.5x scale

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.