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Finding the Fourth Proportional to 45,531.59, 68,302.04 and 12,251.93

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Solution

The fourth proportional to 45,531.59, 68,302.04 and 12,251.93 is: 18,379.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,531.59 : 68,302.04 = 12,251.93 : x
  2. Step 2: Convert to fraction form
    45,531.59/68,302.04 = 12,251.93/x
  3. Step 3: Cross multiply
    45,531.59x = 68,302.04 × 12,251.93
  4. Step 4: Simplify right side
    45,531.59x = 836,831,410.17
  5. Step 5: Solve for x
    x = 836,831,410.17/45,531.59
  6. Step 6: Final answer
    x = 18,379.14

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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.