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Finding the Fourth Proportional to 9,915.87, 14,874.62 and 4,072.53

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Solution

The fourth proportional to 9,915.87, 14,874.62 and 4,072.53 is: 6,109.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.87 : 14,874.62 = 4,072.53 : x
  2. Step 2: Convert to fraction form
    9,915.87/14,874.62 = 4,072.53/x
  3. Step 3: Cross multiply
    9,915.87x = 14,874.62 × 4,072.53
  4. Step 4: Simplify right side
    9,915.87x = 60,577,315.83
  5. Step 5: Solve for x
    x = 60,577,315.83/9,915.87
  6. Step 6: Final answer
    x = 6,109.13

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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.