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Finding the Fourth Proportional to 383,186.40, 528,796.80 and 222,134.88

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Solution

The fourth proportional to 383,186.40, 528,796.80 and 222,134.88 is: 306,545.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,186.40 : 528,796.80 = 222,134.88 : x
  2. Step 2: Convert to fraction form
    383,186.40/528,796.80 = 222,134.88/x
  3. Step 3: Cross multiply
    383,186.40x = 528,796.80 × 222,134.88
  4. Step 4: Simplify right side
    383,186.40x = 117,464,213,712.38
  5. Step 5: Solve for x
    x = 117,464,213,712.38/383,186.40
  6. Step 6: Final answer
    x = 306,545.88

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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.