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Finding the Fourth Proportional to 78,020.68, 107,663.46 and 44,034.76

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Solution

The fourth proportional to 78,020.68, 107,663.46 and 44,034.76 is: 60,765.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,020.68 : 107,663.46 = 44,034.76 : x
  2. Step 2: Convert to fraction form
    78,020.68/107,663.46 = 44,034.76/x
  3. Step 3: Cross multiply
    78,020.68x = 107,663.46 × 44,034.76
  4. Step 4: Simplify right side
    78,020.68x = 4,740,934,621.87
  5. Step 5: Solve for x
    x = 4,740,934,621.87/78,020.68
  6. Step 6: Final answer
    x = 60,765.10

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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.