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Finding the Fourth Proportional to 141,886.56, 195,801.12 and 78,230.28

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Solution

The fourth proportional to 141,886.56, 195,801.12 and 78,230.28 is: 107,956.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,886.56 : 195,801.12 = 78,230.28 : x
  2. Step 2: Convert to fraction form
    141,886.56/195,801.12 = 78,230.28/x
  3. Step 3: Cross multiply
    141,886.56x = 195,801.12 × 78,230.28
  4. Step 4: Simplify right side
    141,886.56x = 15,317,576,441.91
  5. Step 5: Solve for x
    x = 15,317,576,441.91/141,886.56
  6. Step 6: Final answer
    x = 107,956.50

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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.