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Finding the Fourth Proportional to 199,999.97, 300,000.23 and 81,671.31

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Solution

The fourth proportional to 199,999.97, 300,000.23 and 81,671.31 is: 122,507.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,999.97 : 300,000.23 = 81,671.31 : x
  2. Step 2: Convert to fraction form
    199,999.97/300,000.23 = 81,671.31/x
  3. Step 3: Cross multiply
    199,999.97x = 300,000.23 × 81,671.31
  4. Step 4: Simplify right side
    199,999.97x = 24,501,411,376.04
  5. Step 5: Solve for x
    x = 24,501,411,376.04/199,999.97
  6. Step 6: Final answer
    x = 122,507.08

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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.