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Finding the Fourth Proportional to 121,879.10, 182,818.65 and 106,327.10

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Solution

The fourth proportional to 121,879.10, 182,818.65 and 106,327.10 is: 159,490.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,879.10 : 182,818.65 = 106,327.10 : x
  2. Step 2: Convert to fraction form
    121,879.10/182,818.65 = 106,327.10/x
  3. Step 3: Cross multiply
    121,879.10x = 182,818.65 × 106,327.10
  4. Step 4: Simplify right side
    121,879.10x = 19,438,576,880.42
  5. Step 5: Solve for x
    x = 19,438,576,880.42/121,879.10
  6. Step 6: Final answer
    x = 159,490.65

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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.