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Finding the Fourth Proportional to 644,512.76, 889,452.88 and 440,990.56

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Solution

The fourth proportional to 644,512.76, 889,452.88 and 440,990.56 is: 608,584.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,512.76 : 889,452.88 = 440,990.56 : x
  2. Step 2: Convert to fraction form
    644,512.76/889,452.88 = 440,990.56/x
  3. Step 3: Cross multiply
    644,512.76x = 889,452.88 × 440,990.56
  4. Step 4: Simplify right side
    644,512.76x = 392,240,323,644.81
  5. Step 5: Solve for x
    x = 392,240,323,644.81/644,512.76
  6. Step 6: Final answer
    x = 608,584.26

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Double scale
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1.5x scale

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.