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Finding the Fourth Proportional to 265,696.69, 398,543.54 and 66,016.99

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Solution

The fourth proportional to 265,696.69, 398,543.54 and 66,016.99 is: 99,025.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,696.69 : 398,543.54 = 66,016.99 : x
  2. Step 2: Convert to fraction form
    265,696.69/398,543.54 = 66,016.99/x
  3. Step 3: Cross multiply
    265,696.69x = 398,543.54 × 66,016.99
  4. Step 4: Simplify right side
    265,696.69x = 26,310,644,063.43
  5. Step 5: Solve for x
    x = 26,310,644,063.43/265,696.69
  6. Step 6: Final answer
    x = 99,025.11

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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.