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Finding the Fourth Proportional to 411,154.66, 616,819.93 and 122,988.87

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Solution

The fourth proportional to 411,154.66, 616,819.93 and 122,988.87 is: 184,509.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,154.66 : 616,819.93 = 122,988.87 : x
  2. Step 2: Convert to fraction form
    411,154.66/616,819.93 = 122,988.87/x
  3. Step 3: Cross multiply
    411,154.66x = 616,819.93 × 122,988.87
  4. Step 4: Simplify right side
    411,154.66x = 75,861,987,418.76
  5. Step 5: Solve for x
    x = 75,861,987,418.76/411,154.66
  6. Step 6: Final answer
    x = 184,509.62

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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.