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Finding the Fourth Proportional to 172,881.60, 259,516.80 and 133,612.80

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Solution

The fourth proportional to 172,881.60, 259,516.80 and 133,612.80 is: 200,569.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,881.60 : 259,516.80 = 133,612.80 : x
  2. Step 2: Convert to fraction form
    172,881.60/259,516.80 = 133,612.80/x
  3. Step 3: Cross multiply
    172,881.60x = 259,516.80 × 133,612.80
  4. Step 4: Simplify right side
    172,881.60x = 34,674,766,295.04
  5. Step 5: Solve for x
    x = 34,674,766,295.04/172,881.60
  6. Step 6: Final answer
    x = 200,569.44

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1.5x scale

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.