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Finding the Fourth Proportional to 85,925.01, 128,837.30 and 32,620.53

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Solution

The fourth proportional to 85,925.01, 128,837.30 and 32,620.53 is: 48,911.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,925.01 : 128,837.30 = 32,620.53 : x
  2. Step 2: Convert to fraction form
    85,925.01/128,837.30 = 32,620.53/x
  3. Step 3: Cross multiply
    85,925.01x = 128,837.30 × 32,620.53
  4. Step 4: Simplify right side
    85,925.01x = 4,202,740,846.67
  5. Step 5: Solve for x
    x = 4,202,740,846.67/85,925.01
  6. Step 6: Final answer
    x = 48,911.73

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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.