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Finding the Fourth Proportional to 666,358.73, 999,537.27 and 217,078.85

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Solution

The fourth proportional to 666,358.73, 999,537.27 and 217,078.85 is: 325,618.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,358.73 : 999,537.27 = 217,078.85 : x
  2. Step 2: Convert to fraction form
    666,358.73/999,537.27 = 217,078.85/x
  3. Step 3: Cross multiply
    666,358.73x = 999,537.27 × 217,078.85
  4. Step 4: Simplify right side
    666,358.73x = 216,978,401,103.74
  5. Step 5: Solve for x
    x = 216,978,401,103.74/666,358.73
  6. Step 6: Final answer
    x = 325,618.01

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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.