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Finding the Fourth Proportional to 7,646.66, 10,553.19 and 4,290.38

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Solution

The fourth proportional to 7,646.66, 10,553.19 and 4,290.38 is: 5,921.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,646.66 : 10,553.19 = 4,290.38 : x
  2. Step 2: Convert to fraction form
    7,646.66/10,553.19 = 4,290.38/x
  3. Step 3: Cross multiply
    7,646.66x = 10,553.19 × 4,290.38
  4. Step 4: Simplify right side
    7,646.66x = 45,277,195.31
  5. Step 5: Solve for x
    x = 45,277,195.31/7,646.66
  6. Step 6: Final answer
    x = 5,921.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.