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Finding the Fourth Proportional to 75,999.25, 113,999.28 and 20,595.25

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Solution

The fourth proportional to 75,999.25, 113,999.28 and 20,595.25 is: 30,892.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,999.25 : 113,999.28 = 20,595.25 : x
  2. Step 2: Convert to fraction form
    75,999.25/113,999.28 = 20,595.25/x
  3. Step 3: Cross multiply
    75,999.25x = 113,999.28 × 20,595.25
  4. Step 4: Simplify right side
    75,999.25x = 2,347,843,671.42
  5. Step 5: Solve for x
    x = 2,347,843,671.42/75,999.25
  6. Step 6: Final answer
    x = 30,892.98

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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.