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Finding the Fourth Proportional to 105,875.44, 158,808.60 and 26,987.31

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Solution

The fourth proportional to 105,875.44, 158,808.60 and 26,987.31 is: 40,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,875.44 : 158,808.60 = 26,987.31 : x
  2. Step 2: Convert to fraction form
    105,875.44/158,808.60 = 26,987.31/x
  3. Step 3: Cross multiply
    105,875.44x = 158,808.60 × 26,987.31
  4. Step 4: Simplify right side
    105,875.44x = 4,285,816,918.87
  5. Step 5: Solve for x
    x = 4,285,816,918.87/105,875.44
  6. Step 6: Final answer
    x = 40,479.80

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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.