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Finding the Fourth Proportional to 74,988.64, 103,479.12 and 41,452

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Solution

The fourth proportional to 74,988.64, 103,479.12 and 41,452 is: 57,200.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,988.64 : 103,479.12 = 41,452 : x
  2. Step 2: Convert to fraction form
    74,988.64/103,479.12 = 41,452/x
  3. Step 3: Cross multiply
    74,988.64x = 103,479.12 × 41,452
  4. Step 4: Simplify right side
    74,988.64x = 4,289,416,482.24
  5. Step 5: Solve for x
    x = 4,289,416,482.24/74,988.64
  6. Step 6: Final answer
    x = 57,200.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.