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Finding the Fourth Proportional to 666,343.70, 999,514.74 and 217,063.83

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Solution

The fourth proportional to 666,343.70, 999,514.74 and 217,063.83 is: 325,595.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,343.70 : 999,514.74 = 217,063.83 : x
  2. Step 2: Convert to fraction form
    666,343.70/999,514.74 = 217,063.83/x
  3. Step 3: Cross multiply
    666,343.70x = 999,514.74 × 217,063.83
  4. Step 4: Simplify right side
    666,343.70x = 216,958,500,947.04
  5. Step 5: Solve for x
    x = 216,958,500,947.04/666,343.70
  6. Step 6: Final answer
    x = 325,595.49

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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.