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Finding the Fourth Proportional to 644,515.79, 889,457.01 and 440,993.57

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Solution

The fourth proportional to 644,515.79, 889,457.01 and 440,993.57 is: 608,588.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,515.79 : 889,457.01 = 440,993.57 : x
  2. Step 2: Convert to fraction form
    644,515.79/889,457.01 = 440,993.57/x
  3. Step 3: Cross multiply
    644,515.79x = 889,457.01 × 440,993.57
  4. Step 4: Simplify right side
    644,515.79x = 392,244,822,201.43
  5. Step 5: Solve for x
    x = 392,244,822,201.43/644,515.79
  6. Step 6: Final answer
    x = 608,588.38

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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.