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Finding the Fourth Proportional to 82,925.40, 124,388.01 and 20,595.90

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Solution

The fourth proportional to 82,925.40, 124,388.01 and 20,595.90 is: 30,893.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,925.40 : 124,388.01 = 20,595.90 : x
  2. Step 2: Convert to fraction form
    82,925.40/124,388.01 = 20,595.90/x
  3. Step 3: Cross multiply
    82,925.40x = 124,388.01 × 20,595.90
  4. Step 4: Simplify right side
    82,925.40x = 2,561,883,015.16
  5. Step 5: Solve for x
    x = 2,561,883,015.16/82,925.40
  6. Step 6: Final answer
    x = 30,893.83

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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.