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Finding the Fourth Proportional to 68,838.16, 103,294.80 and 26,719.90

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Solution

The fourth proportional to 68,838.16, 103,294.80 and 26,719.90 is: 40,094.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,838.16 : 103,294.80 = 26,719.90 : x
  2. Step 2: Convert to fraction form
    68,838.16/103,294.80 = 26,719.90/x
  3. Step 3: Cross multiply
    68,838.16x = 103,294.80 × 26,719.90
  4. Step 4: Simplify right side
    68,838.16x = 2,760,026,726.52
  5. Step 5: Solve for x
    x = 2,760,026,726.52/68,838.16
  6. Step 6: Final answer
    x = 40,094.43

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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.