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Finding the Fourth Proportional to 357,134.40, 535,721.04 and 107,809.92

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Solution

The fourth proportional to 357,134.40, 535,721.04 and 107,809.92 is: 161,720.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,134.40 : 535,721.04 = 107,809.92 : x
  2. Step 2: Convert to fraction form
    357,134.40/535,721.04 = 107,809.92/x
  3. Step 3: Cross multiply
    357,134.40x = 535,721.04 × 107,809.92
  4. Step 4: Simplify right side
    357,134.40x = 57,756,042,464.72
  5. Step 5: Solve for x
    x = 57,756,042,464.72/357,134.40
  6. Step 6: Final answer
    x = 161,720.75

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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.