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Finding the Fourth Proportional to 60,873.32, 91,324.74 and 19,320.68

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Solution

The fourth proportional to 60,873.32, 91,324.74 and 19,320.68 is: 28,985.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,873.32 : 91,324.74 = 19,320.68 : x
  2. Step 2: Convert to fraction form
    60,873.32/91,324.74 = 19,320.68/x
  3. Step 3: Cross multiply
    60,873.32x = 91,324.74 × 19,320.68
  4. Step 4: Simplify right side
    60,873.32x = 1,764,456,077.62
  5. Step 5: Solve for x
    x = 1,764,456,077.62/60,873.32
  6. Step 6: Final answer
    x = 28,985.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.