Home / 82,640,146.60-123,960,219.90-77,601,298.60

Finding the Fourth Proportional to 82,640,146.60, 123,960,219.90 and 77,601,298.60

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Solution

The fourth proportional to 82,640,146.60, 123,960,219.90 and 77,601,298.60 is: 116,401,947.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,640,146.60 : 123,960,219.90 = 77,601,298.60 : x
  2. Step 2: Convert to fraction form
    82,640,146.60/123,960,219.90 = 77,601,298.60/x
  3. Step 3: Cross multiply
    82,640,146.60x = 123,960,219.90 × 77,601,298.60
  4. Step 4: Simplify right side
    82,640,146.60x = 9,619,474,038,981,562
  5. Step 5: Solve for x
    x = 9,619,474,038,981,562/82,640,146.60
  6. Step 6: Final answer
    x = 116,401,947.90

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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.