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Finding the Fourth Proportional to 67,412, 93,022.80 and 43,539.68

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Solution

The fourth proportional to 67,412, 93,022.80 and 43,539.68 is: 60,081.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,412 : 93,022.80 = 43,539.68 : x
  2. Step 2: Convert to fraction form
    67,412/93,022.80 = 43,539.68/x
  3. Step 3: Cross multiply
    67,412x = 93,022.80 × 43,539.68
  4. Step 4: Simplify right side
    67,412x = 4,050,182,944.70
  5. Step 5: Solve for x
    x = 4,050,182,944.70/67,412
  6. Step 6: Final answer
    x = 60,081.04

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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.