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Finding the Fourth Proportional to 265,752, 398,629.44 and 68,760

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Solution

The fourth proportional to 265,752, 398,629.44 and 68,760 is: 103,140.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,752 : 398,629.44 = 68,760 : x
  2. Step 2: Convert to fraction form
    265,752/398,629.44 = 68,760/x
  3. Step 3: Cross multiply
    265,752x = 398,629.44 × 68,760
  4. Step 4: Simplify right side
    265,752x = 27,409,760,294.40
  5. Step 5: Solve for x
    x = 27,409,760,294.40/265,752
  6. Step 6: Final answer
    x = 103,140.37

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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.