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Finding the Fourth Proportional to 193,581.60, 290,409.12 and 67,216.92

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Solution

The fourth proportional to 193,581.60, 290,409.12 and 67,216.92 is: 100,838.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,581.60 : 290,409.12 = 67,216.92 : x
  2. Step 2: Convert to fraction form
    193,581.60/290,409.12 = 67,216.92/x
  3. Step 3: Cross multiply
    193,581.60x = 290,409.12 × 67,216.92
  4. Step 4: Simplify right side
    193,581.60x = 19,520,406,586.31
  5. Step 5: Solve for x
    x = 19,520,406,586.31/193,581.60
  6. Step 6: Final answer
    x = 100,838.13

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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.