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Finding the Fourth Proportional to 10,708.65, 16,061.13 and 2,915.64

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Solution

The fourth proportional to 10,708.65, 16,061.13 and 2,915.64 is: 4,372.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,708.65 : 16,061.13 = 2,915.64 : x
  2. Step 2: Convert to fraction form
    10,708.65/16,061.13 = 2,915.64/x
  3. Step 3: Cross multiply
    10,708.65x = 16,061.13 × 2,915.64
  4. Step 4: Simplify right side
    10,708.65x = 46,828,473.07
  5. Step 5: Solve for x
    x = 46,828,473.07/10,708.65
  6. Step 6: Final answer
    x = 4,372.96

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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.