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Finding the Fourth Proportional to 9,916.20, 14,874.30 and 9,260.10

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Solution

The fourth proportional to 9,916.20, 14,874.30 and 9,260.10 is: 13,890.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,916.20 : 14,874.30 = 9,260.10 : x
  2. Step 2: Convert to fraction form
    9,916.20/14,874.30 = 9,260.10/x
  3. Step 3: Cross multiply
    9,916.20x = 14,874.30 × 9,260.10
  4. Step 4: Simplify right side
    9,916.20x = 137,737,505.43
  5. Step 5: Solve for x
    x = 137,737,505.43/9,916.20
  6. Step 6: Final answer
    x = 13,890.15

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1.5x scale

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.