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Finding the Fourth Proportional to 347,212.01, 520,726.86 and 147,429.56

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Solution

The fourth proportional to 347,212.01, 520,726.86 and 147,429.56 is: 221,105.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,212.01 : 520,726.86 = 147,429.56 : x
  2. Step 2: Convert to fraction form
    347,212.01/520,726.86 = 147,429.56/x
  3. Step 3: Cross multiply
    347,212.01x = 520,726.86 × 147,429.56
  4. Step 4: Simplify right side
    347,212.01x = 76,770,533,151.80
  5. Step 5: Solve for x
    x = 76,770,533,151.80/347,212.01
  6. Step 6: Final answer
    x = 221,105.64

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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.