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Finding the Fourth Proportional to 13,029.68, 17,980.74 and 7,061.24

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Solution

The fourth proportional to 13,029.68, 17,980.74 and 7,061.24 is: 9,744.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,029.68 : 17,980.74 = 7,061.24 : x
  2. Step 2: Convert to fraction form
    13,029.68/17,980.74 = 7,061.24/x
  3. Step 3: Cross multiply
    13,029.68x = 17,980.74 × 7,061.24
  4. Step 4: Simplify right side
    13,029.68x = 126,966,230.61
  5. Step 5: Solve for x
    x = 126,966,230.61/13,029.68
  6. Step 6: Final answer
    x = 9,744.39

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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.