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Finding the Fourth Proportional to 173,920.10, 260,892.30 and 68,725.40

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Solution

The fourth proportional to 173,920.10, 260,892.30 and 68,725.40 is: 103,092.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,920.10 : 260,892.30 = 68,725.40 : x
  2. Step 2: Convert to fraction form
    173,920.10/260,892.30 = 68,725.40/x
  3. Step 3: Cross multiply
    173,920.10x = 260,892.30 × 68,725.40
  4. Step 4: Simplify right side
    173,920.10x = 17,929,927,674.42
  5. Step 5: Solve for x
    x = 17,929,927,674.42/173,920.10
  6. Step 6: Final answer
    x = 103,092.90

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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.