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Finding the Fourth Proportional to 211,959.32, 318,696.60 and 195,522.80

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Solution

The fourth proportional to 211,959.32, 318,696.60 and 195,522.80 is: 293,983.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,959.32 : 318,696.60 = 195,522.80 : x
  2. Step 2: Convert to fraction form
    211,959.32/318,696.60 = 195,522.80/x
  3. Step 3: Cross multiply
    211,959.32x = 318,696.60 × 195,522.80
  4. Step 4: Simplify right side
    211,959.32x = 62,312,451,582.48
  5. Step 5: Solve for x
    x = 62,312,451,582.48/211,959.32
  6. Step 6: Final answer
    x = 293,983.07

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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.