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Finding the Fourth Proportional to 411,893.30, 617,720.66 and 123,693.33

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Solution

The fourth proportional to 411,893.30, 617,720.66 and 123,693.33 is: 185,504.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,893.30 : 617,720.66 = 123,693.33 : x
  2. Step 2: Convert to fraction form
    411,893.30/617,720.66 = 123,693.33/x
  3. Step 3: Cross multiply
    411,893.30x = 617,720.66 × 123,693.33
  4. Step 4: Simplify right side
    411,893.30x = 76,407,925,445.20
  5. Step 5: Solve for x
    x = 76,407,925,445.20/411,893.30
  6. Step 6: Final answer
    x = 185,504.17

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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.