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Finding the Fourth Proportional to 193,172.20, 289,412.70 and 165,524.20

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Solution

The fourth proportional to 193,172.20, 289,412.70 and 165,524.20 is: 247,990.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,172.20 : 289,412.70 = 165,524.20 : x
  2. Step 2: Convert to fraction form
    193,172.20/289,412.70 = 165,524.20/x
  3. Step 3: Cross multiply
    193,172.20x = 289,412.70 × 165,524.20
  4. Step 4: Simplify right side
    193,172.20x = 47,904,805,637.34
  5. Step 5: Solve for x
    x = 47,904,805,637.34/193,172.20
  6. Step 6: Final answer
    x = 247,990.16

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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.