Home / 82,640,133.60-123,960,200.40-77,601,285.60

Finding the Fourth Proportional to 82,640,133.60, 123,960,200.40 and 77,601,285.60

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Solution

The fourth proportional to 82,640,133.60, 123,960,200.40 and 77,601,285.60 is: 116,401,928.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,640,133.60 : 123,960,200.40 = 77,601,285.60 : x
  2. Step 2: Convert to fraction form
    82,640,133.60/123,960,200.40 = 77,601,285.60/x
  3. Step 3: Cross multiply
    82,640,133.60x = 123,960,200.40 × 77,601,285.60
  4. Step 4: Simplify right side
    82,640,133.60x = 9,619,470,914,273,634
  5. Step 5: Solve for x
    x = 9,619,470,914,273,634/82,640,133.60
  6. Step 6: Final answer
    x = 116,401,928.40

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Similar ratio
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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.