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Finding the Fourth Proportional to 171,219.87, 256,842.15 and 52,875.90

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Solution

The fourth proportional to 171,219.87, 256,842.15 and 52,875.90 is: 79,317.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,219.87 : 256,842.15 = 52,875.90 : x
  2. Step 2: Convert to fraction form
    171,219.87/256,842.15 = 52,875.90/x
  3. Step 3: Cross multiply
    171,219.87x = 256,842.15 × 52,875.90
  4. Step 4: Simplify right side
    171,219.87x = 13,580,759,839.19
  5. Step 5: Solve for x
    x = 13,580,759,839.19/171,219.87
  6. Step 6: Final answer
    x = 79,317.66

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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.