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Finding the Fourth Proportional to 45,409.60, 68,126.55 and 32,287.60

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Solution

The fourth proportional to 45,409.60, 68,126.55 and 32,287.60 is: 48,440.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,409.60 : 68,126.55 = 32,287.60 : x
  2. Step 2: Convert to fraction form
    45,409.60/68,126.55 = 32,287.60/x
  3. Step 3: Cross multiply
    45,409.60x = 68,126.55 × 32,287.60
  4. Step 4: Simplify right side
    45,409.60x = 2,199,642,795.78
  5. Step 5: Solve for x
    x = 2,199,642,795.78/45,409.60
  6. Step 6: Final answer
    x = 48,440.04

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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.