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Finding the Fourth Proportional to 70,520.70, 105,781.74 and 17,930.19

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Solution

The fourth proportional to 70,520.70, 105,781.74 and 17,930.19 is: 26,895.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,520.70 : 105,781.74 = 17,930.19 : x
  2. Step 2: Convert to fraction form
    70,520.70/105,781.74 = 17,930.19/x
  3. Step 3: Cross multiply
    70,520.70x = 105,781.74 × 17,930.19
  4. Step 4: Simplify right side
    70,520.70x = 1,896,686,696.73
  5. Step 5: Solve for x
    x = 1,896,686,696.73/70,520.70
  6. Step 6: Final answer
    x = 26,895.46

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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.