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Finding the Fourth Proportional to 443,989.11, 616,837.80 and 438,674.70

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Solution

The fourth proportional to 443,989.11, 616,837.80 and 438,674.70 is: 609,454.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,989.11 : 616,837.80 = 438,674.70 : x
  2. Step 2: Convert to fraction form
    443,989.11/616,837.80 = 438,674.70/x
  3. Step 3: Cross multiply
    443,989.11x = 616,837.80 × 438,674.70
  4. Step 4: Simplify right side
    443,989.11x = 270,591,136,863.66
  5. Step 5: Solve for x
    x = 270,591,136,863.66/443,989.11
  6. Step 6: Final answer
    x = 609,454.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.