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Finding the Fourth Proportional to 113,276.80, 169,915.20 and 34,387.20

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Solution

The fourth proportional to 113,276.80, 169,915.20 and 34,387.20 is: 51,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,276.80 : 169,915.20 = 34,387.20 : x
  2. Step 2: Convert to fraction form
    113,276.80/169,915.20 = 34,387.20/x
  3. Step 3: Cross multiply
    113,276.80x = 169,915.20 × 34,387.20
  4. Step 4: Simplify right side
    113,276.80x = 5,842,907,965.44
  5. Step 5: Solve for x
    x = 5,842,907,965.44/113,276.80
  6. Step 6: Final answer
    x = 51,580.80

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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.