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Finding the Fourth Proportional to 193,129.20, 289,715.40 and 60,008.40

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Solution

The fourth proportional to 193,129.20, 289,715.40 and 60,008.40 is: 90,019.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,129.20 : 289,715.40 = 60,008.40 : x
  2. Step 2: Convert to fraction form
    193,129.20/289,715.40 = 60,008.40/x
  3. Step 3: Cross multiply
    193,129.20x = 289,715.40 × 60,008.40
  4. Step 4: Simplify right side
    193,129.20x = 17,385,357,609.36
  5. Step 5: Solve for x
    x = 17,385,357,609.36/193,129.20
  6. Step 6: Final answer
    x = 90,019.31

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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.