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Finding the Fourth Proportional to 381,073.99, 525,844.20 and 219,980.93

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Solution

The fourth proportional to 381,073.99, 525,844.20 and 219,980.93 is: 303,551.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,073.99 : 525,844.20 = 219,980.93 : x
  2. Step 2: Convert to fraction form
    381,073.99/525,844.20 = 219,980.93/x
  3. Step 3: Cross multiply
    381,073.99x = 525,844.20 × 219,980.93
  4. Step 4: Simplify right side
    381,073.99x = 115,675,698,783.62
  5. Step 5: Solve for x
    x = 115,675,698,783.62/381,073.99
  6. Step 6: Final answer
    x = 303,551.81

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Double scale
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Similar ratio
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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.