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Finding the Fourth Proportional to 418,639.32, 577,770.98 and 234,928.49

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Solution

The fourth proportional to 418,639.32, 577,770.98 and 234,928.49 is: 324,228.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,639.32 : 577,770.98 = 234,928.49 : x
  2. Step 2: Convert to fraction form
    418,639.32/577,770.98 = 234,928.49/x
  3. Step 3: Cross multiply
    418,639.32x = 577,770.98 × 234,928.49
  4. Step 4: Simplify right side
    418,639.32x = 135,734,859,833.72
  5. Step 5: Solve for x
    x = 135,734,859,833.72/418,639.32
  6. Step 6: Final answer
    x = 324,228.65

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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.