Home / 86,206,840.80-129,310,261.20-76,853,479.20

Finding the Fourth Proportional to 86,206,840.80, 129,310,261.20 and 76,853,479.20

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Solution

The fourth proportional to 86,206,840.80, 129,310,261.20 and 76,853,479.20 is: 115,280,218.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,206,840.80 : 129,310,261.20 = 76,853,479.20 : x
  2. Step 2: Convert to fraction form
    86,206,840.80/129,310,261.20 = 76,853,479.20/x
  3. Step 3: Cross multiply
    86,206,840.80x = 129,310,261.20 × 76,853,479.20
  4. Step 4: Simplify right side
    86,206,840.80x = 9,937,943,469,480,768
  5. Step 5: Solve for x
    x = 9,937,943,469,480,768/86,206,840.80
  6. Step 6: Final answer
    x = 115,280,218.80

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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.