Home / 82,313.10-123,469.65-19,983.60

Finding the Fourth Proportional to 82,313.10, 123,469.65 and 19,983.60

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Solution

The fourth proportional to 82,313.10, 123,469.65 and 19,983.60 is: 29,975.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,313.10 : 123,469.65 = 19,983.60 : x
  2. Step 2: Convert to fraction form
    82,313.10/123,469.65 = 19,983.60/x
  3. Step 3: Cross multiply
    82,313.10x = 123,469.65 × 19,983.60
  4. Step 4: Simplify right side
    82,313.10x = 2,467,368,097.74
  5. Step 5: Solve for x
    x = 2,467,368,097.74/82,313.10
  6. Step 6: Final answer
    x = 29,975.40

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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.