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Finding the Fourth Proportional to 351,478.01, 527,107.95 and 126,809.24

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Solution

The fourth proportional to 351,478.01, 527,107.95 and 126,809.24 is: 190,174.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,478.01 : 527,107.95 = 126,809.24 : x
  2. Step 2: Convert to fraction form
    351,478.01/527,107.95 = 126,809.24/x
  3. Step 3: Cross multiply
    351,478.01x = 527,107.95 × 126,809.24
  4. Step 4: Simplify right side
    351,478.01x = 66,842,155,901.92
  5. Step 5: Solve for x
    x = 66,842,155,901.92/351,478.01
  6. Step 6: Final answer
    x = 190,174.51

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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.