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Finding the Fourth Proportional to 289,785.53, 399,556.50 and 187,773.76

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Solution

The fourth proportional to 289,785.53, 399,556.50 and 187,773.76 is: 258,902.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,785.53 : 399,556.50 = 187,773.76 : x
  2. Step 2: Convert to fraction form
    289,785.53/399,556.50 = 187,773.76/x
  3. Step 3: Cross multiply
    289,785.53x = 399,556.50 × 187,773.76
  4. Step 4: Simplify right side
    289,785.53x = 75,026,226,132.73
  5. Step 5: Solve for x
    x = 75,026,226,132.73/289,785.53
  6. Step 6: Final answer
    x = 258,902.59

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1.5x scale

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.