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Finding the Fourth Proportional to 474,960.82, 712,442.70 and 115,130.27

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Solution

The fourth proportional to 474,960.82, 712,442.70 and 115,130.27 is: 172,695.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,960.82 : 712,442.70 = 115,130.27 : x
  2. Step 2: Convert to fraction form
    474,960.82/712,442.70 = 115,130.27/x
  3. Step 3: Cross multiply
    474,960.82x = 712,442.70 × 115,130.27
  4. Step 4: Simplify right side
    474,960.82x = 82,023,716,416.58
  5. Step 5: Solve for x
    x = 82,023,716,416.58/474,960.82
  6. Step 6: Final answer
    x = 172,695.75

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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.