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Finding the Fourth Proportional to 193,353.81, 290,044.58 and 80,920.84

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Solution

The fourth proportional to 193,353.81, 290,044.58 and 80,920.84 is: 121,387.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,353.81 : 290,044.58 = 80,920.84 : x
  2. Step 2: Convert to fraction form
    193,353.81/290,044.58 = 80,920.84/x
  3. Step 3: Cross multiply
    193,353.81x = 290,044.58 × 80,920.84
  4. Step 4: Simplify right side
    193,353.81x = 23,470,651,051.05
  5. Step 5: Solve for x
    x = 23,470,651,051.05/193,353.81
  6. Step 6: Final answer
    x = 121,387.06

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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.