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Finding the Fourth Proportional to 416,905.79, 575,330.45 and 225,919.53

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Solution

The fourth proportional to 416,905.79, 575,330.45 and 225,919.53 is: 311,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,905.79 : 575,330.45 = 225,919.53 : x
  2. Step 2: Convert to fraction form
    416,905.79/575,330.45 = 225,919.53/x
  3. Step 3: Cross multiply
    416,905.79x = 575,330.45 × 225,919.53
  4. Step 4: Simplify right side
    416,905.79x = 129,978,383,729.09
  5. Step 5: Solve for x
    x = 129,978,383,729.09/416,905.79
  6. Step 6: Final answer
    x = 311,769.20

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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.