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Finding the Fourth Proportional to 43,916.81, 65,877.04 and 12,752.06

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Solution

The fourth proportional to 43,916.81, 65,877.04 and 12,752.06 is: 19,128.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,916.81 : 65,877.04 = 12,752.06 : x
  2. Step 2: Convert to fraction form
    43,916.81/65,877.04 = 12,752.06/x
  3. Step 3: Cross multiply
    43,916.81x = 65,877.04 × 12,752.06
  4. Step 4: Simplify right side
    43,916.81x = 840,068,147.34
  5. Step 5: Solve for x
    x = 840,068,147.34/43,916.81
  6. Step 6: Final answer
    x = 19,128.62

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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.