Home / 128,304,068.80-192,456,103.20-56,640,452.80

Finding the Fourth Proportional to 128,304,068.80, 192,456,103.20 and 56,640,452.80

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Solution

The fourth proportional to 128,304,068.80, 192,456,103.20 and 56,640,452.80 is: 84,960,679.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,068.80 : 192,456,103.20 = 56,640,452.80 : x
  2. Step 2: Convert to fraction form
    128,304,068.80/192,456,103.20 = 56,640,452.80/x
  3. Step 3: Cross multiply
    128,304,068.80x = 192,456,103.20 × 56,640,452.80
  4. Step 4: Simplify right side
    128,304,068.80x = 10,900,800,829,371,528
  5. Step 5: Solve for x
    x = 10,900,800,829,371,528/128,304,068.80
  6. Step 6: Final answer
    x = 84,960,679.20

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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.