Home / 81,587,998.80-122,381,998.20-76,801,093.20

Finding the Fourth Proportional to 81,587,998.80, 122,381,998.20 and 76,801,093.20

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Solution

The fourth proportional to 81,587,998.80, 122,381,998.20 and 76,801,093.20 is: 115,201,639.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,587,998.80 : 122,381,998.20 = 76,801,093.20 : x
  2. Step 2: Convert to fraction form
    81,587,998.80/122,381,998.20 = 76,801,093.20/x
  3. Step 3: Cross multiply
    81,587,998.80x = 122,381,998.20 × 76,801,093.20
  4. Step 4: Simplify right side
    81,587,998.80x = 9,399,071,249,760,432
  5. Step 5: Solve for x
    x = 9,399,071,249,760,432/81,587,998.80
  6. Step 6: Final answer
    x = 115,201,639.80

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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.