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Finding the Fourth Proportional to 165,647.20, 248,470.80 and 144,911.20

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Solution

The fourth proportional to 165,647.20, 248,470.80 and 144,911.20 is: 217,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,647.20 : 248,470.80 = 144,911.20 : x
  2. Step 2: Convert to fraction form
    165,647.20/248,470.80 = 144,911.20/x
  3. Step 3: Cross multiply
    165,647.20x = 248,470.80 × 144,911.20
  4. Step 4: Simplify right side
    165,647.20x = 36,006,201,792.96
  5. Step 5: Solve for x
    x = 36,006,201,792.96/165,647.20
  6. Step 6: Final answer
    x = 217,366.80

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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.