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Finding the Fourth Proportional to 68,925.84, 103,254.87 and 40,393.59

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Solution

The fourth proportional to 68,925.84, 103,254.87 and 40,393.59 is: 60,511.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,925.84 : 103,254.87 = 40,393.59 : x
  2. Step 2: Convert to fraction form
    68,925.84/103,254.87 = 40,393.59/x
  3. Step 3: Cross multiply
    68,925.84x = 103,254.87 × 40,393.59
  4. Step 4: Simplify right side
    68,925.84x = 4,170,834,884.28
  5. Step 5: Solve for x
    x = 4,170,834,884.28/68,925.84
  6. Step 6: Final answer
    x = 60,511.92

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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.