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Finding the Fourth Proportional to 60,500.64, 90,751.16 and 21,048.36

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Solution

The fourth proportional to 60,500.64, 90,751.16 and 21,048.36 is: 31,572.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,500.64 : 90,751.16 = 21,048.36 : x
  2. Step 2: Convert to fraction form
    60,500.64/90,751.16 = 21,048.36/x
  3. Step 3: Cross multiply
    60,500.64x = 90,751.16 × 21,048.36
  4. Step 4: Simplify right side
    60,500.64x = 1,910,163,086.10
  5. Step 5: Solve for x
    x = 1,910,163,086.10/60,500.64
  6. Step 6: Final answer
    x = 31,572.61

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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.