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Finding the Fourth Proportional to 12,646.13, 17,451.72 and 7,057.13

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Solution

The fourth proportional to 12,646.13, 17,451.72 and 7,057.13 is: 9,738.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,646.13 : 17,451.72 = 7,057.13 : x
  2. Step 2: Convert to fraction form
    12,646.13/17,451.72 = 7,057.13/x
  3. Step 3: Cross multiply
    12,646.13x = 17,451.72 × 7,057.13
  4. Step 4: Simplify right side
    12,646.13x = 123,158,969.51
  5. Step 5: Solve for x
    x = 123,158,969.51/12,646.13
  6. Step 6: Final answer
    x = 9,738.87

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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.