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Finding the Fourth Proportional to 60,081.94, 90,128.05 and 15,708.62

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Solution

The fourth proportional to 60,081.94, 90,128.05 and 15,708.62 is: 23,564.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,081.94 : 90,128.05 = 15,708.62 : x
  2. Step 2: Convert to fraction form
    60,081.94/90,128.05 = 15,708.62/x
  3. Step 3: Cross multiply
    60,081.94x = 90,128.05 × 15,708.62
  4. Step 4: Simplify right side
    60,081.94x = 1,415,787,458.55
  5. Step 5: Solve for x
    x = 1,415,787,458.55/60,081.94
  6. Step 6: Final answer
    x = 23,564.28

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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.