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Finding the Fourth Proportional to 462,215.20, 693,322.80 and 378,234.40

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Solution

The fourth proportional to 462,215.20, 693,322.80 and 378,234.40 is: 567,351.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,215.20 : 693,322.80 = 378,234.40 : x
  2. Step 2: Convert to fraction form
    462,215.20/693,322.80 = 378,234.40/x
  3. Step 3: Cross multiply
    462,215.20x = 693,322.80 × 378,234.40
  4. Step 4: Simplify right side
    462,215.20x = 262,238,533,264.32
  5. Step 5: Solve for x
    x = 262,238,533,264.32/462,215.20
  6. Step 6: Final answer
    x = 567,351.60

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Similar ratio
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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.