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Finding the Fourth Proportional to 371,281.21, 556,832.56 and 171,409.61

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Solution

The fourth proportional to 371,281.21, 556,832.56 and 171,409.61 is: 257,073.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,281.21 : 556,832.56 = 171,409.61 : x
  2. Step 2: Convert to fraction form
    371,281.21/556,832.56 = 171,409.61/x
  3. Step 3: Cross multiply
    371,281.21x = 556,832.56 × 171,409.61
  4. Step 4: Simplify right side
    371,281.21x = 95,446,451,944.90
  5. Step 5: Solve for x
    x = 95,446,451,944.90/371,281.21
  6. Step 6: Final answer
    x = 257,073.21

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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.