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Finding the Fourth Proportional to 141,888.49, 195,807.44 and 78,228.56

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Solution

The fourth proportional to 141,888.49, 195,807.44 and 78,228.56 is: 107,956.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,888.49 : 195,807.44 = 78,228.56 : x
  2. Step 2: Convert to fraction form
    141,888.49/195,807.44 = 78,228.56/x
  3. Step 3: Cross multiply
    141,888.49x = 195,807.44 × 78,228.56
  4. Step 4: Simplify right side
    141,888.49x = 15,317,734,753.58
  5. Step 5: Solve for x
    x = 15,317,734,753.58/141,888.49
  6. Step 6: Final answer
    x = 107,956.15

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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.