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Finding the Fourth Proportional to 117,619.20, 176,504.40 and 65,066.40

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Solution

The fourth proportional to 117,619.20, 176,504.40 and 65,066.40 is: 97,641.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,619.20 : 176,504.40 = 65,066.40 : x
  2. Step 2: Convert to fraction form
    117,619.20/176,504.40 = 65,066.40/x
  3. Step 3: Cross multiply
    117,619.20x = 176,504.40 × 65,066.40
  4. Step 4: Simplify right side
    117,619.20x = 11,484,505,892.16
  5. Step 5: Solve for x
    x = 11,484,505,892.16/117,619.20
  6. Step 6: Final answer
    x = 97,641.42

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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.