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Finding the Fourth Proportional to 194,491.52, 291,737.56 and 128,227.58

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Solution

The fourth proportional to 194,491.52, 291,737.56 and 128,227.58 is: 192,341.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,491.52 : 291,737.56 = 128,227.58 : x
  2. Step 2: Convert to fraction form
    194,491.52/291,737.56 = 128,227.58/x
  3. Step 3: Cross multiply
    194,491.52x = 291,737.56 × 128,227.58
  4. Step 4: Simplify right side
    194,491.52x = 37,408,801,313.90
  5. Step 5: Solve for x
    x = 37,408,801,313.90/194,491.52
  6. Step 6: Final answer
    x = 192,341.55

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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.