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Finding the Fourth Proportional to 265,445.55, 398,163.47 and 65,766.38

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Solution

The fourth proportional to 265,445.55, 398,163.47 and 65,766.38 is: 98,648.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,445.55 : 398,163.47 = 65,766.38 : x
  2. Step 2: Convert to fraction form
    265,445.55/398,163.47 = 65,766.38/x
  3. Step 3: Cross multiply
    265,445.55x = 398,163.47 × 65,766.38
  4. Step 4: Simplify right side
    265,445.55x = 26,185,767,750.49
  5. Step 5: Solve for x
    x = 26,185,767,750.49/265,445.55
  6. Step 6: Final answer
    x = 98,648.36

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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.