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Finding the Fourth Proportional to 193,338.55, 290,113.53 and 75,014.56

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Solution

The fourth proportional to 193,338.55, 290,113.53 and 75,014.56 is: 112,562.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,338.55 : 290,113.53 = 75,014.56 : x
  2. Step 2: Convert to fraction form
    193,338.55/290,113.53 = 75,014.56/x
  3. Step 3: Cross multiply
    193,338.55x = 290,113.53 × 75,014.56
  4. Step 4: Simplify right side
    193,338.55x = 21,762,738,803.00
  5. Step 5: Solve for x
    x = 21,762,738,803.00/193,338.55
  6. Step 6: Final answer
    x = 112,562.85

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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.