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Finding the Fourth Proportional to 260,831.63, 391,175.16 and 92,329.77

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Solution

The fourth proportional to 260,831.63, 391,175.16 and 92,329.77 is: 138,469.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,831.63 : 391,175.16 = 92,329.77 : x
  2. Step 2: Convert to fraction form
    260,831.63/391,175.16 = 92,329.77/x
  3. Step 3: Cross multiply
    260,831.63x = 391,175.16 × 92,329.77
  4. Step 4: Simplify right side
    260,831.63x = 36,117,113,673.18
  5. Step 5: Solve for x
    x = 36,117,113,673.18/260,831.63
  6. Step 6: Final answer
    x = 138,469.07

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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.