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Finding the Fourth Proportional to 170,216.54, 234,940.20 and 98,585

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Solution

The fourth proportional to 170,216.54, 234,940.20 and 98,585 is: 136,071.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,216.54 : 234,940.20 = 98,585 : x
  2. Step 2: Convert to fraction form
    170,216.54/234,940.20 = 98,585/x
  3. Step 3: Cross multiply
    170,216.54x = 234,940.20 × 98,585
  4. Step 4: Simplify right side
    170,216.54x = 23,161,579,617
  5. Step 5: Solve for x
    x = 23,161,579,617/170,216.54
  6. Step 6: Final answer
    x = 136,071.26

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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.