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Finding the Fourth Proportional to 265,810.66, 398,717.46 and 66,131.04

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Solution

The fourth proportional to 265,810.66, 398,717.46 and 66,131.04 is: 99,196.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,810.66 : 398,717.46 = 66,131.04 : x
  2. Step 2: Convert to fraction form
    265,810.66/398,717.46 = 66,131.04/x
  3. Step 3: Cross multiply
    265,810.66x = 398,717.46 × 66,131.04
  4. Step 4: Simplify right side
    265,810.66x = 26,367,600,295.96
  5. Step 5: Solve for x
    x = 26,367,600,295.96/265,810.66
  6. Step 6: Final answer
    x = 99,196.93

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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.