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Finding the Fourth Proportional to 318,273.66, 439,238.70 and 189,177.84

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Solution

The fourth proportional to 318,273.66, 439,238.70 and 189,177.84 is: 261,077.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,273.66 : 439,238.70 = 189,177.84 : x
  2. Step 2: Convert to fraction form
    318,273.66/439,238.70 = 189,177.84/x
  3. Step 3: Cross multiply
    318,273.66x = 439,238.70 × 189,177.84
  4. Step 4: Simplify right side
    318,273.66x = 83,094,228,510.41
  5. Step 5: Solve for x
    x = 83,094,228,510.41/318,273.66
  6. Step 6: Final answer
    x = 261,077.93

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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.