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Finding the Fourth Proportional to 219,220.80, 328,831.20 and 183,791.40

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Solution

The fourth proportional to 219,220.80, 328,831.20 and 183,791.40 is: 275,687.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,220.80 : 328,831.20 = 183,791.40 : x
  2. Step 2: Convert to fraction form
    219,220.80/328,831.20 = 183,791.40/x
  3. Step 3: Cross multiply
    219,220.80x = 328,831.20 × 183,791.40
  4. Step 4: Simplify right side
    219,220.80x = 60,436,346,611.68
  5. Step 5: Solve for x
    x = 60,436,346,611.68/219,220.80
  6. Step 6: Final answer
    x = 275,687.10

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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.