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Finding the Fourth Proportional to 381,697.18, 526,806.89 and 220,645.59

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Solution

The fourth proportional to 381,697.18, 526,806.89 and 220,645.59 is: 304,528.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,697.18 : 526,806.89 = 220,645.59 : x
  2. Step 2: Convert to fraction form
    381,697.18/526,806.89 = 220,645.59/x
  3. Step 3: Cross multiply
    381,697.18x = 526,806.89 × 220,645.59
  4. Step 4: Simplify right side
    381,697.18x = 116,237,614,808.78
  5. Step 5: Solve for x
    x = 116,237,614,808.78/381,697.18
  6. Step 6: Final answer
    x = 304,528.36

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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.