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Finding the Fourth Proportional to 285,682.68, 394,230.78 and 156,618.36

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Solution

The fourth proportional to 285,682.68, 394,230.78 and 156,618.36 is: 216,127.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,682.68 : 394,230.78 = 156,618.36 : x
  2. Step 2: Convert to fraction form
    285,682.68/394,230.78 = 156,618.36/x
  3. Step 3: Cross multiply
    285,682.68x = 394,230.78 × 156,618.36
  4. Step 4: Simplify right side
    285,682.68x = 61,743,778,225.12
  5. Step 5: Solve for x
    x = 61,743,778,225.12/285,682.68
  6. Step 6: Final answer
    x = 216,127.13

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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.