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Finding the Fourth Proportional to 193,234.60, 289,780.62 and 66,842.20

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Solution

The fourth proportional to 193,234.60, 289,780.62 and 66,842.20 is: 100,238.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,234.60 : 289,780.62 = 66,842.20 : x
  2. Step 2: Convert to fraction form
    193,234.60/289,780.62 = 66,842.20/x
  3. Step 3: Cross multiply
    193,234.60x = 289,780.62 × 66,842.20
  4. Step 4: Simplify right side
    193,234.60x = 19,369,574,158.16
  5. Step 5: Solve for x
    x = 19,369,574,158.16/193,234.60
  6. Step 6: Final answer
    x = 100,238.64

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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.