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Finding the Fourth Proportional to 68,995.60, 103,492.60 and 48,648.56

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Solution

The fourth proportional to 68,995.60, 103,492.60 and 48,648.56 is: 72,972.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,995.60 : 103,492.60 = 48,648.56 : x
  2. Step 2: Convert to fraction form
    68,995.60/103,492.60 = 48,648.56/x
  3. Step 3: Cross multiply
    68,995.60x = 103,492.60 × 48,648.56
  4. Step 4: Simplify right side
    68,995.60x = 5,034,765,960.66
  5. Step 5: Solve for x
    x = 5,034,765,960.66/68,995.60
  6. Step 6: Final answer
    x = 72,972.28

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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.