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Finding the Fourth Proportional to 70,118.83, 105,209.07 and 36,831.16

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Solution

The fourth proportional to 70,118.83, 105,209.07 and 36,831.16 is: 55,262.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,118.83 : 105,209.07 = 36,831.16 : x
  2. Step 2: Convert to fraction form
    70,118.83/105,209.07 = 36,831.16/x
  3. Step 3: Cross multiply
    70,118.83x = 105,209.07 × 36,831.16
  4. Step 4: Simplify right side
    70,118.83x = 3,874,972,090.62
  5. Step 5: Solve for x
    x = 3,874,972,090.62/70,118.83
  6. Step 6: Final answer
    x = 55,262.93

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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.