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Finding the Fourth Proportional to 891,047.91, 1,229,644.80 and 483,149.01

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Solution

The fourth proportional to 891,047.91, 1,229,644.80 and 483,149.01 is: 666,744.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,047.91 : 1,229,644.80 = 483,149.01 : x
  2. Step 2: Convert to fraction form
    891,047.91/1,229,644.80 = 483,149.01/x
  3. Step 3: Cross multiply
    891,047.91x = 1,229,644.80 × 483,149.01
  4. Step 4: Simplify right side
    891,047.91x = 594,101,667,771.65
  5. Step 5: Solve for x
    x = 594,101,667,771.65/891,047.91
  6. Step 6: Final answer
    x = 666,744.92

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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.