Home / 81,653,998.60-122,480,997.90-54,444,219.40

Finding the Fourth Proportional to 81,653,998.60, 122,480,997.90 and 54,444,219.40

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Solution

The fourth proportional to 81,653,998.60, 122,480,997.90 and 54,444,219.40 is: 81,666,329.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,653,998.60 : 122,480,997.90 = 54,444,219.40 : x
  2. Step 2: Convert to fraction form
    81,653,998.60/122,480,997.90 = 54,444,219.40/x
  3. Step 3: Cross multiply
    81,653,998.60x = 122,480,997.90 × 54,444,219.40
  4. Step 4: Simplify right side
    81,653,998.60x = 6,668,382,321,998,539
  5. Step 5: Solve for x
    x = 6,668,382,321,998,539/81,653,998.60
  6. Step 6: Final answer
    x = 81,666,329.10

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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.