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Finding the Fourth Proportional to 666,057.40, 999,215.70 and 192,758.20

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Solution

The fourth proportional to 666,057.40, 999,215.70 and 192,758.20 is: 289,174.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,057.40 : 999,215.70 = 192,758.20 : x
  2. Step 2: Convert to fraction form
    666,057.40/999,215.70 = 192,758.20/x
  3. Step 3: Cross multiply
    666,057.40x = 999,215.70 × 192,758.20
  4. Step 4: Simplify right side
    666,057.40x = 192,607,019,743.74
  5. Step 5: Solve for x
    x = 192,607,019,743.74/666,057.40
  6. Step 6: Final answer
    x = 289,174.81

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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.