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Finding the Fourth Proportional to 170,891.90, 235,823.65 and 98,289.29

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Solution

The fourth proportional to 170,891.90, 235,823.65 and 98,289.29 is: 135,635.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,891.90 : 235,823.65 = 98,289.29 : x
  2. Step 2: Convert to fraction form
    170,891.90/235,823.65 = 98,289.29/x
  3. Step 3: Cross multiply
    170,891.90x = 235,823.65 × 98,289.29
  4. Step 4: Simplify right side
    170,891.90x = 23,178,939,467.54
  5. Step 5: Solve for x
    x = 23,178,939,467.54/170,891.90
  6. Step 6: Final answer
    x = 135,635.10

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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.