Home / 128,304,067.80-192,456,101.70-56,640,451.80

Finding the Fourth Proportional to 128,304,067.80, 192,456,101.70 and 56,640,451.80

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Solution

The fourth proportional to 128,304,067.80, 192,456,101.70 and 56,640,451.80 is: 84,960,677.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,067.80 : 192,456,101.70 = 56,640,451.80 : x
  2. Step 2: Convert to fraction form
    128,304,067.80/192,456,101.70 = 56,640,451.80/x
  3. Step 3: Cross multiply
    128,304,067.80x = 192,456,101.70 × 56,640,451.80
  4. Step 4: Simplify right side
    128,304,067.80x = 10,900,800,551,954,746
  5. Step 5: Solve for x
    x = 10,900,800,551,954,746/128,304,067.80
  6. Step 6: Final answer
    x = 84,960,677.70

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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.