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Finding the Fourth Proportional to 9,916.65, 14,874.54 and 3,342.81

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Solution

The fourth proportional to 9,916.65, 14,874.54 and 3,342.81 is: 5,014.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,916.65 : 14,874.54 = 3,342.81 : x
  2. Step 2: Convert to fraction form
    9,916.65/14,874.54 = 3,342.81/x
  3. Step 3: Cross multiply
    9,916.65x = 14,874.54 × 3,342.81
  4. Step 4: Simplify right side
    9,916.65x = 49,722,761.06
  5. Step 5: Solve for x
    x = 49,722,761.06/9,916.65
  6. Step 6: Final answer
    x = 5,014.07

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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.