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Finding the Fourth Proportional to 78,253.75, 107,995.76 and 44,262.55

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Solution

The fourth proportional to 78,253.75, 107,995.76 and 44,262.55 is: 61,085.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,253.75 : 107,995.76 = 44,262.55 : x
  2. Step 2: Convert to fraction form
    78,253.75/107,995.76 = 44,262.55/x
  3. Step 3: Cross multiply
    78,253.75x = 107,995.76 × 44,262.55
  4. Step 4: Simplify right side
    78,253.75x = 4,780,167,726.79
  5. Step 5: Solve for x
    x = 4,780,167,726.79/78,253.75
  6. Step 6: Final answer
    x = 61,085.48

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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.