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Finding the Fourth Proportional to 289,184.87, 399,077.12 and 168,396.59

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Solution

The fourth proportional to 289,184.87, 399,077.12 and 168,396.59 is: 232,388.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,184.87 : 399,077.12 = 168,396.59 : x
  2. Step 2: Convert to fraction form
    289,184.87/399,077.12 = 168,396.59/x
  3. Step 3: Cross multiply
    289,184.87x = 399,077.12 × 168,396.59
  4. Step 4: Simplify right side
    289,184.87x = 67,203,224,580.63
  5. Step 5: Solve for x
    x = 67,203,224,580.63/289,184.87
  6. Step 6: Final answer
    x = 232,388.46

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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.