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Finding the Fourth Proportional to 172,366.10, 258,549.15 and 83,792.60

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Solution

The fourth proportional to 172,366.10, 258,549.15 and 83,792.60 is: 125,688.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,366.10 : 258,549.15 = 83,792.60 : x
  2. Step 2: Convert to fraction form
    172,366.10/258,549.15 = 83,792.60/x
  3. Step 3: Cross multiply
    172,366.10x = 258,549.15 × 83,792.60
  4. Step 4: Simplify right side
    172,366.10x = 21,664,505,506.29
  5. Step 5: Solve for x
    x = 21,664,505,506.29/172,366.10
  6. Step 6: Final answer
    x = 125,688.90

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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.