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Finding the Fourth Proportional to 283,613.84, 391,382.08 and 154,553.47

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Solution

The fourth proportional to 283,613.84, 391,382.08 and 154,553.47 is: 213,281.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,613.84 : 391,382.08 = 154,553.47 : x
  2. Step 2: Convert to fraction form
    283,613.84/391,382.08 = 154,553.47/x
  3. Step 3: Cross multiply
    283,613.84x = 391,382.08 × 154,553.47
  4. Step 4: Simplify right side
    283,613.84x = 60,489,457,194.98
  5. Step 5: Solve for x
    x = 60,489,457,194.98/283,613.84
  6. Step 6: Final answer
    x = 213,281.05

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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.