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Finding the Fourth Proportional to 90,978.93, 136,449.57 and 24,403.23

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Solution

The fourth proportional to 90,978.93, 136,449.57 and 24,403.23 is: 36,599.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,978.93 : 136,449.57 = 24,403.23 : x
  2. Step 2: Convert to fraction form
    90,978.93/136,449.57 = 24,403.23/x
  3. Step 3: Cross multiply
    90,978.93x = 136,449.57 × 24,403.23
  4. Step 4: Simplify right side
    90,978.93x = 3,329,810,240.11
  5. Step 5: Solve for x
    x = 3,329,810,240.11/90,978.93
  6. Step 6: Final answer
    x = 36,599.80

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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.