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Finding the Fourth Proportional to 75,972.91, 104,842.60 and 42,438.91

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Solution

The fourth proportional to 75,972.91, 104,842.60 and 42,438.91 is: 58,565.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,972.91 : 104,842.60 = 42,438.91 : x
  2. Step 2: Convert to fraction form
    75,972.91/104,842.60 = 42,438.91/x
  3. Step 3: Cross multiply
    75,972.91x = 104,842.60 × 42,438.91
  4. Step 4: Simplify right side
    75,972.91x = 4,449,405,665.57
  5. Step 5: Solve for x
    x = 4,449,405,665.57/75,972.91
  6. Step 6: Final answer
    x = 58,565.69

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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.