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Finding the Fourth Proportional to 65,831.60, 98,770.44 and 19,087.28

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Solution

The fourth proportional to 65,831.60, 98,770.44 and 19,087.28 is: 28,637.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,831.60 : 98,770.44 = 19,087.28 : x
  2. Step 2: Convert to fraction form
    65,831.60/98,770.44 = 19,087.28/x
  3. Step 3: Cross multiply
    65,831.60x = 98,770.44 × 19,087.28
  4. Step 4: Simplify right side
    65,831.60x = 1,885,259,044.00
  5. Step 5: Solve for x
    x = 1,885,259,044.00/65,831.60
  6. Step 6: Final answer
    x = 28,637.60

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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.