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Finding the Fourth Proportional to 59,987.92, 89,972.64 and 20,007.61

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Solution

The fourth proportional to 59,987.92, 89,972.64 and 20,007.61 is: 30,008.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,987.92 : 89,972.64 = 20,007.61 : x
  2. Step 2: Convert to fraction form
    59,987.92/89,972.64 = 20,007.61/x
  3. Step 3: Cross multiply
    59,987.92x = 89,972.64 × 20,007.61
  4. Step 4: Simplify right side
    59,987.92x = 1,800,137,041.93
  5. Step 5: Solve for x
    x = 1,800,137,041.93/59,987.92
  6. Step 6: Final answer
    x = 30,008.33

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1.5x scale

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.