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Finding the Fourth Proportional to 416,406.15, 574,642.28 and 225,419.54

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Solution

The fourth proportional to 416,406.15, 574,642.28 and 225,419.54 is: 311,079.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,406.15 : 574,642.28 = 225,419.54 : x
  2. Step 2: Convert to fraction form
    416,406.15/574,642.28 = 225,419.54/x
  3. Step 3: Cross multiply
    416,406.15x = 574,642.28 × 225,419.54
  4. Step 4: Simplify right side
    416,406.15x = 129,535,596,112.49
  5. Step 5: Solve for x
    x = 129,535,596,112.49/416,406.15
  6. Step 6: Final answer
    x = 311,079.93

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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.