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Finding the Fourth Proportional to 285,633.95, 394,174.35 and 156,572.33

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Solution

The fourth proportional to 285,633.95, 394,174.35 and 156,572.33 is: 216,069.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,633.95 : 394,174.35 = 156,572.33 : x
  2. Step 2: Convert to fraction form
    285,633.95/394,174.35 = 156,572.33/x
  3. Step 3: Cross multiply
    285,633.95x = 394,174.35 × 156,572.33
  4. Step 4: Simplify right side
    285,633.95x = 61,716,794,434.86
  5. Step 5: Solve for x
    x = 61,716,794,434.86/285,633.95
  6. Step 6: Final answer
    x = 216,069.54

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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.