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Finding the Fourth Proportional to 416,411.28, 574,642.80 and 225,420.48

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Solution

The fourth proportional to 416,411.28, 574,642.80 and 225,420.48 is: 311,077.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,411.28 : 574,642.80 = 225,420.48 : x
  2. Step 2: Convert to fraction form
    416,411.28/574,642.80 = 225,420.48/x
  3. Step 3: Cross multiply
    416,411.28x = 574,642.80 × 225,420.48
  4. Step 4: Simplify right side
    416,411.28x = 129,536,255,804.54
  5. Step 5: Solve for x
    x = 129,536,255,804.54/416,411.28
  6. Step 6: Final answer
    x = 311,077.68

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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.