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Finding the Fourth Proportional to 317,644.88, 438,350.27 and 188,609.11

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Solution

The fourth proportional to 317,644.88, 438,350.27 and 188,609.11 is: 260,280.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,644.88 : 438,350.27 = 188,609.11 : x
  2. Step 2: Convert to fraction form
    317,644.88/438,350.27 = 188,609.11/x
  3. Step 3: Cross multiply
    317,644.88x = 438,350.27 × 188,609.11
  4. Step 4: Simplify right side
    317,644.88x = 82,676,852,254.04
  5. Step 5: Solve for x
    x = 82,676,852,254.04/317,644.88
  6. Step 6: Final answer
    x = 260,280.77

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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.