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Finding the Fourth Proportional to 7,612.40, 11,425.80 and 4,696.40

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Solution

The fourth proportional to 7,612.40, 11,425.80 and 4,696.40 is: 7,049.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,612.40 : 11,425.80 = 4,696.40 : x
  2. Step 2: Convert to fraction form
    7,612.40/11,425.80 = 4,696.40/x
  3. Step 3: Cross multiply
    7,612.40x = 11,425.80 × 4,696.40
  4. Step 4: Simplify right side
    7,612.40x = 53,660,127.12
  5. Step 5: Solve for x
    x = 53,660,127.12/7,612.40
  6. Step 6: Final answer
    x = 7,049.04

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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.