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Finding the Fourth Proportional to 611,366.76, 916,755.18 and 256,285.44

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Solution

The fourth proportional to 611,366.76, 916,755.18 and 256,285.44 is: 384,304.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,366.76 : 916,755.18 = 256,285.44 : x
  2. Step 2: Convert to fraction form
    611,366.76/916,755.18 = 256,285.44/x
  3. Step 3: Cross multiply
    611,366.76x = 916,755.18 × 256,285.44
  4. Step 4: Simplify right side
    611,366.76x = 234,951,004,678.58
  5. Step 5: Solve for x
    x = 234,951,004,678.58/611,366.76
  6. Step 6: Final answer
    x = 384,304.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.