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Finding the Fourth Proportional to 154,215.20, 231,409.20 and 65,453.60

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Solution

The fourth proportional to 154,215.20, 231,409.20 and 65,453.60 is: 98,217.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,215.20 : 231,409.20 = 65,453.60 : x
  2. Step 2: Convert to fraction form
    154,215.20/231,409.20 = 65,453.60/x
  3. Step 3: Cross multiply
    154,215.20x = 231,409.20 × 65,453.60
  4. Step 4: Simplify right side
    154,215.20x = 15,146,565,213.12
  5. Step 5: Solve for x
    x = 15,146,565,213.12/154,215.20
  6. Step 6: Final answer
    x = 98,217.07

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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.