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Finding the Fourth Proportional to 105,568.56, 158,390.08 and 70,170.48

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Solution

The fourth proportional to 105,568.56, 158,390.08 and 70,170.48 is: 105,280.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,568.56 : 158,390.08 = 70,170.48 : x
  2. Step 2: Convert to fraction form
    105,568.56/158,390.08 = 70,170.48/x
  3. Step 3: Cross multiply
    105,568.56x = 158,390.08 × 70,170.48
  4. Step 4: Simplify right side
    105,568.56x = 11,114,307,940.84
  5. Step 5: Solve for x
    x = 11,114,307,940.84/105,568.56
  6. Step 6: Final answer
    x = 105,280.47

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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.