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Finding the Fourth Proportional to 17,698.40, 24,420.99 and 10,143.28

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Solution

The fourth proportional to 17,698.40, 24,420.99 and 10,143.28 is: 13,996.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,698.40 : 24,420.99 = 10,143.28 : x
  2. Step 2: Convert to fraction form
    17,698.40/24,420.99 = 10,143.28/x
  3. Step 3: Cross multiply
    17,698.40x = 24,420.99 × 10,143.28
  4. Step 4: Simplify right side
    17,698.40x = 247,708,817.34
  5. Step 5: Solve for x
    x = 247,708,817.34/17,698.40
  6. Step 6: Final answer
    x = 13,996.11

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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.