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Finding the Fourth Proportional to 439,883.16, 663,121.05 and 410,588.16

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Solution

The fourth proportional to 439,883.16, 663,121.05 and 410,588.16 is: 618,959.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,883.16 : 663,121.05 = 410,588.16 : x
  2. Step 2: Convert to fraction form
    439,883.16/663,121.05 = 410,588.16/x
  3. Step 3: Cross multiply
    439,883.16x = 663,121.05 × 410,588.16
  4. Step 4: Simplify right side
    439,883.16x = 272,269,646,408.22
  5. Step 5: Solve for x
    x = 272,269,646,408.22/439,883.16
  6. Step 6: Final answer
    x = 618,959.02

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.