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Finding the Fourth Proportional to 90,441, 124,808.58 and 50,697

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Solution

The fourth proportional to 90,441, 124,808.58 and 50,697 is: 69,961.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,441 : 124,808.58 = 50,697 : x
  2. Step 2: Convert to fraction form
    90,441/124,808.58 = 50,697/x
  3. Step 3: Cross multiply
    90,441x = 124,808.58 × 50,697
  4. Step 4: Simplify right side
    90,441x = 6,327,420,580.26
  5. Step 5: Solve for x
    x = 6,327,420,580.26/90,441
  6. Step 6: Final answer
    x = 69,961.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.