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Finding the Fourth Proportional to 285,677.84, 394,226.87 and 156,611.89

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Solution

The fourth proportional to 285,677.84, 394,226.87 and 156,611.89 is: 216,119.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,677.84 : 394,226.87 = 156,611.89 : x
  2. Step 2: Convert to fraction form
    285,677.84/394,226.87 = 156,611.89/x
  3. Step 3: Cross multiply
    285,677.84x = 394,226.87 × 156,611.89
  4. Step 4: Simplify right side
    285,677.84x = 61,740,616,785.00
  5. Step 5: Solve for x
    x = 61,740,616,785.00/285,677.84
  6. Step 6: Final answer
    x = 216,119.73

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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.