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Finding the Fourth Proportional to 193,412.72, 289,983 and 74,984.24

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Solution

The fourth proportional to 193,412.72, 289,983 and 74,984.24 is: 112,423.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,412.72 : 289,983 = 74,984.24 : x
  2. Step 2: Convert to fraction form
    193,412.72/289,983 = 74,984.24/x
  3. Step 3: Cross multiply
    193,412.72x = 289,983 × 74,984.24
  4. Step 4: Simplify right side
    193,412.72x = 21,744,154,867.92
  5. Step 5: Solve for x
    x = 21,744,154,867.92/193,412.72
  6. Step 6: Final answer
    x = 112,423.60

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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.