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Finding the Fourth Proportional to 9,915.48, 14,872.14 and 4,369.14

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Solution

The fourth proportional to 9,915.48, 14,872.14 and 4,369.14 is: 6,553.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.48 : 14,872.14 = 4,369.14 : x
  2. Step 2: Convert to fraction form
    9,915.48/14,872.14 = 4,369.14/x
  3. Step 3: Cross multiply
    9,915.48x = 14,872.14 × 4,369.14
  4. Step 4: Simplify right side
    9,915.48x = 64,978,461.76
  5. Step 5: Solve for x
    x = 64,978,461.76/9,915.48
  6. Step 6: Final answer
    x = 6,553.23

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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.