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Finding the Fourth Proportional to 124,898.94, 172,360.54 and 68,310.31

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Solution

The fourth proportional to 124,898.94, 172,360.54 and 68,310.31 is: 94,268.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,898.94 : 172,360.54 = 68,310.31 : x
  2. Step 2: Convert to fraction form
    124,898.94/172,360.54 = 68,310.31/x
  3. Step 3: Cross multiply
    124,898.94x = 172,360.54 × 68,310.31
  4. Step 4: Simplify right side
    124,898.94x = 11,774,002,179.29
  5. Step 5: Solve for x
    x = 11,774,002,179.29/124,898.94
  6. Step 6: Final answer
    x = 94,268.23

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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.