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Finding the Fourth Proportional to 10,616.32, 15,920.64 and 3,696.64

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Solution

The fourth proportional to 10,616.32, 15,920.64 and 3,696.64 is: 5,543.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,616.32 : 15,920.64 = 3,696.64 : x
  2. Step 2: Convert to fraction form
    10,616.32/15,920.64 = 3,696.64/x
  3. Step 3: Cross multiply
    10,616.32x = 15,920.64 × 3,696.64
  4. Step 4: Simplify right side
    10,616.32x = 58,852,874.65
  5. Step 5: Solve for x
    x = 58,852,874.65/10,616.32
  6. Step 6: Final answer
    x = 5,543.62

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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.