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Finding the Fourth Proportional to 105,473.88, 158,210.56 and 43,144.40

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Solution

The fourth proportional to 105,473.88, 158,210.56 and 43,144.40 is: 64,716.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,473.88 : 158,210.56 = 43,144.40 : x
  2. Step 2: Convert to fraction form
    105,473.88/158,210.56 = 43,144.40/x
  3. Step 3: Cross multiply
    105,473.88x = 158,210.56 × 43,144.40
  4. Step 4: Simplify right side
    105,473.88x = 6,825,899,684.86
  5. Step 5: Solve for x
    x = 6,825,899,684.86/105,473.88
  6. Step 6: Final answer
    x = 64,716.49

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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.