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Finding the Fourth Proportional to 78,226.80, 107,947.08 and 44,238.47

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Solution

The fourth proportional to 78,226.80, 107,947.08 and 44,238.47 is: 61,045.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,226.80 : 107,947.08 = 44,238.47 : x
  2. Step 2: Convert to fraction form
    78,226.80/107,947.08 = 44,238.47/x
  3. Step 3: Cross multiply
    78,226.80x = 107,947.08 × 44,238.47
  4. Step 4: Simplify right side
    78,226.80x = 4,775,413,120.43
  5. Step 5: Solve for x
    x = 4,775,413,120.43/78,226.80
  6. Step 6: Final answer
    x = 61,045.74

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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.