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Finding the Fourth Proportional to 70,242.69, 105,356.16 and 17,652.27

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Solution

The fourth proportional to 70,242.69, 105,356.16 and 17,652.27 is: 26,476.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,242.69 : 105,356.16 = 17,652.27 : x
  2. Step 2: Convert to fraction form
    70,242.69/105,356.16 = 17,652.27/x
  3. Step 3: Cross multiply
    70,242.69x = 105,356.16 × 17,652.27
  4. Step 4: Simplify right side
    70,242.69x = 1,859,775,382.48
  5. Step 5: Solve for x
    x = 1,859,775,382.48/70,242.69
  6. Step 6: Final answer
    x = 26,476.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.