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Finding the Fourth Proportional to 105,680.90, 158,520.00 and 25,719.01

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Solution

The fourth proportional to 105,680.90, 158,520.00 and 25,719.01 is: 38,578.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,680.90 : 158,520.00 = 25,719.01 : x
  2. Step 2: Convert to fraction form
    105,680.90/158,520.00 = 25,719.01/x
  3. Step 3: Cross multiply
    105,680.90x = 158,520.00 × 25,719.01
  4. Step 4: Simplify right side
    105,680.90x = 4,076,976,902.90
  5. Step 5: Solve for x
    x = 4,076,976,902.90/105,680.90
  6. Step 6: Final answer
    x = 38,578.18

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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.