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Finding the Fourth Proportional to 644,506.27, 889,443.89 and 440,984.05

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Solution

The fourth proportional to 644,506.27, 889,443.89 and 440,984.05 is: 608,575.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,506.27 : 889,443.89 = 440,984.05 : x
  2. Step 2: Convert to fraction form
    644,506.27/889,443.89 = 440,984.05/x
  3. Step 3: Cross multiply
    644,506.27x = 889,443.89 × 440,984.05
  4. Step 4: Simplify right side
    644,506.27x = 392,230,566,085.12
  5. Step 5: Solve for x
    x = 392,230,566,085.12/644,506.27
  6. Step 6: Final answer
    x = 608,575.25

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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.