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Finding the Fourth Proportional to 443,640.39, 665,515.71 and 173,733.66

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Solution

The fourth proportional to 443,640.39, 665,515.71 and 173,733.66 is: 260,622.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,640.39 : 665,515.71 = 173,733.66 : x
  2. Step 2: Convert to fraction form
    443,640.39/665,515.71 = 173,733.66/x
  3. Step 3: Cross multiply
    443,640.39x = 665,515.71 × 173,733.66
  4. Step 4: Simplify right side
    443,640.39x = 115,622,480,085.80
  5. Step 5: Solve for x
    x = 115,622,480,085.80/443,640.39
  6. Step 6: Final answer
    x = 260,622.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.