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Finding the Fourth Proportional to 13,171.54, 19,641.13 and 13,053.01

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Solution

The fourth proportional to 13,171.54, 19,641.13 and 13,053.01 is: 19,464.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.54 : 19,641.13 = 13,053.01 : x
  2. Step 2: Convert to fraction form
    13,171.54/19,641.13 = 13,053.01/x
  3. Step 3: Cross multiply
    13,171.54x = 19,641.13 × 13,053.01
  4. Step 4: Simplify right side
    13,171.54x = 256,375,866.30
  5. Step 5: Solve for x
    x = 256,375,866.30/13,171.54
  6. Step 6: Final answer
    x = 19,464.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.