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Finding the Fourth Proportional to 636,687.84, 878,753.88 and 364,937.76

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Solution

The fourth proportional to 636,687.84, 878,753.88 and 364,937.76 is: 503,685.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,687.84 : 878,753.88 = 364,937.76 : x
  2. Step 2: Convert to fraction form
    636,687.84/878,753.88 = 364,937.76/x
  3. Step 3: Cross multiply
    636,687.84x = 878,753.88 × 364,937.76
  4. Step 4: Simplify right side
    636,687.84x = 320,690,472,558.51
  5. Step 5: Solve for x
    x = 320,690,472,558.51/636,687.84
  6. Step 6: Final answer
    x = 503,685.56

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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.