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Finding the Fourth Proportional to 285,693.93, 394,255.44 and 156,630.87

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Solution

The fourth proportional to 285,693.93, 394,255.44 and 156,630.87 is: 216,149.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,693.93 : 394,255.44 = 156,630.87 : x
  2. Step 2: Convert to fraction form
    285,693.93/394,255.44 = 156,630.87/x
  3. Step 3: Cross multiply
    285,693.93x = 394,255.44 × 156,630.87
  4. Step 4: Simplify right side
    285,693.93x = 61,752,572,569.43
  5. Step 5: Solve for x
    x = 61,752,572,569.43/285,693.93
  6. Step 6: Final answer
    x = 216,149.40

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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.