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Finding the Fourth Proportional to 417,881.60, 627,091.20 and 231,027.20

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Solution

The fourth proportional to 417,881.60, 627,091.20 and 231,027.20 is: 346,689.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,881.60 : 627,091.20 = 231,027.20 : x
  2. Step 2: Convert to fraction form
    417,881.60/627,091.20 = 231,027.20/x
  3. Step 3: Cross multiply
    417,881.60x = 627,091.20 × 231,027.20
  4. Step 4: Simplify right side
    417,881.60x = 144,875,124,080.64
  5. Step 5: Solve for x
    x = 144,875,124,080.64/417,881.60
  6. Step 6: Final answer
    x = 346,689.41

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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.