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Finding the Fourth Proportional to 62,906.16, 86,831.84 and 39,046.80

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Solution

The fourth proportional to 62,906.16, 86,831.84 and 39,046.80 is: 53,897.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,906.16 : 86,831.84 = 39,046.80 : x
  2. Step 2: Convert to fraction form
    62,906.16/86,831.84 = 39,046.80/x
  3. Step 3: Cross multiply
    62,906.16x = 86,831.84 × 39,046.80
  4. Step 4: Simplify right side
    62,906.16x = 3,390,505,490.11
  5. Step 5: Solve for x
    x = 3,390,505,490.11/62,906.16
  6. Step 6: Final answer
    x = 53,897.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.