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Finding the Fourth Proportional to 82,293.40, 123,440.10 and 19,963.90

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Solution

The fourth proportional to 82,293.40, 123,440.10 and 19,963.90 is: 29,945.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,293.40 : 123,440.10 = 19,963.90 : x
  2. Step 2: Convert to fraction form
    82,293.40/123,440.10 = 19,963.90/x
  3. Step 3: Cross multiply
    82,293.40x = 123,440.10 × 19,963.90
  4. Step 4: Simplify right side
    82,293.40x = 2,464,345,812.39
  5. Step 5: Solve for x
    x = 2,464,345,812.39/82,293.40
  6. Step 6: Final answer
    x = 29,945.85

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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.