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Finding the Fourth Proportional to 283,955.51, 391,861.10 and 154,894.55

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Solution

The fourth proportional to 283,955.51, 391,861.10 and 154,894.55 is: 213,755.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,955.51 : 391,861.10 = 154,894.55 : x
  2. Step 2: Convert to fraction form
    283,955.51/391,861.10 = 154,894.55/x
  3. Step 3: Cross multiply
    283,955.51x = 391,861.10 × 154,894.55
  4. Step 4: Simplify right side
    283,955.51x = 60,697,148,747.01
  5. Step 5: Solve for x
    x = 60,697,148,747.01/283,955.51
  6. Step 6: Final answer
    x = 213,755.84

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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.