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Finding the Fourth Proportional to 409,868.49, 614,843.73 and 125,555.76

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Solution

The fourth proportional to 409,868.49, 614,843.73 and 125,555.76 is: 188,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,868.49 : 614,843.73 = 125,555.76 : x
  2. Step 2: Convert to fraction form
    409,868.49/614,843.73 = 125,555.76/x
  3. Step 3: Cross multiply
    409,868.49x = 614,843.73 × 125,555.76
  4. Step 4: Simplify right side
    409,868.49x = 77,197,171,801.38
  5. Step 5: Solve for x
    x = 77,197,171,801.38/409,868.49
  6. Step 6: Final answer
    x = 188,346.20

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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.