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Finding the Fourth Proportional to 543,944.70, 815,722.65 and 188,970.30

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Solution

The fourth proportional to 543,944.70, 815,722.65 and 188,970.30 is: 283,387.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,944.70 : 815,722.65 = 188,970.30 : x
  2. Step 2: Convert to fraction form
    543,944.70/815,722.65 = 188,970.30/x
  3. Step 3: Cross multiply
    543,944.70x = 815,722.65 × 188,970.30
  4. Step 4: Simplify right side
    543,944.70x = 154,147,353,887.30
  5. Step 5: Solve for x
    x = 154,147,353,887.30/543,944.70
  6. Step 6: Final answer
    x = 283,387.91

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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.