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Finding the Fourth Proportional to 60,645.66, 90,978.22 and 25,590.48

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Solution

The fourth proportional to 60,645.66, 90,978.22 and 25,590.48 is: 38,389.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,645.66 : 90,978.22 = 25,590.48 : x
  2. Step 2: Convert to fraction form
    60,645.66/90,978.22 = 25,590.48/x
  3. Step 3: Cross multiply
    60,645.66x = 90,978.22 × 25,590.48
  4. Step 4: Simplify right side
    60,645.66x = 2,328,176,319.35
  5. Step 5: Solve for x
    x = 2,328,176,319.35/60,645.66
  6. Step 6: Final answer
    x = 38,389.83

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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.