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Finding the Fourth Proportional to 800,521.99, 1,199,594.72 and 445,047.01

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Solution

The fourth proportional to 800,521.99, 1,199,594.72 and 445,047.01 is: 666,909.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,521.99 : 1,199,594.72 = 445,047.01 : x
  2. Step 2: Convert to fraction form
    800,521.99/1,199,594.72 = 445,047.01/x
  3. Step 3: Cross multiply
    800,521.99x = 1,199,594.72 × 445,047.01
  4. Step 4: Simplify right side
    800,521.99x = 533,876,041,122.55
  5. Step 5: Solve for x
    x = 533,876,041,122.55/800,521.99
  6. Step 6: Final answer
    x = 666,909.90

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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.