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Finding the Fourth Proportional to 107,619.65, 148,359.60 and 71,260.22

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Solution

The fourth proportional to 107,619.65, 148,359.60 and 71,260.22 is: 98,236.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,619.65 : 148,359.60 = 71,260.22 : x
  2. Step 2: Convert to fraction form
    107,619.65/148,359.60 = 71,260.22/x
  3. Step 3: Cross multiply
    107,619.65x = 148,359.60 × 71,260.22
  4. Step 4: Simplify right side
    107,619.65x = 10,572,137,735.11
  5. Step 5: Solve for x
    x = 10,572,137,735.11/107,619.65
  6. Step 6: Final answer
    x = 98,236.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.