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Finding the Fourth Proportional to 418,976.35, 578,200.43 and 237,695.92

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Solution

The fourth proportional to 418,976.35, 578,200.43 and 237,695.92 is: 328,027.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,976.35 : 578,200.43 = 237,695.92 : x
  2. Step 2: Convert to fraction form
    418,976.35/578,200.43 = 237,695.92/x
  3. Step 3: Cross multiply
    418,976.35x = 578,200.43 × 237,695.92
  4. Step 4: Simplify right side
    418,976.35x = 137,435,880,964.95
  5. Step 5: Solve for x
    x = 137,435,880,964.95/418,976.35
  6. Step 6: Final answer
    x = 328,027.78

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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.