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Finding the Fourth Proportional to 70,305.41, 105,456.90 and 17,713.73

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Solution

The fourth proportional to 70,305.41, 105,456.90 and 17,713.73 is: 26,570.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,305.41 : 105,456.90 = 17,713.73 : x
  2. Step 2: Convert to fraction form
    70,305.41/105,456.90 = 17,713.73/x
  3. Step 3: Cross multiply
    70,305.41x = 105,456.90 × 17,713.73
  4. Step 4: Simplify right side
    70,305.41x = 1,868,035,053.24
  5. Step 5: Solve for x
    x = 1,868,035,053.24/70,305.41
  6. Step 6: Final answer
    x = 26,570.29

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1.5x scale

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.