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Finding the Fourth Proportional to 70,158.56, 105,237.90 and 19,555.56

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Solution

The fourth proportional to 70,158.56, 105,237.90 and 19,555.56 is: 29,333.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,158.56 : 105,237.90 = 19,555.56 : x
  2. Step 2: Convert to fraction form
    70,158.56/105,237.90 = 19,555.56/x
  3. Step 3: Cross multiply
    70,158.56x = 105,237.90 × 19,555.56
  4. Step 4: Simplify right side
    70,158.56x = 2,057,986,067.72
  5. Step 5: Solve for x
    x = 2,057,986,067.72/70,158.56
  6. Step 6: Final answer
    x = 29,333.36

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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.