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Finding the Fourth Proportional to 364,643.52, 547,209.92 and 127,986.96

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Solution

The fourth proportional to 364,643.52, 547,209.92 and 127,986.96 is: 192,066.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,643.52 : 547,209.92 = 127,986.96 : x
  2. Step 2: Convert to fraction form
    364,643.52/547,209.92 = 127,986.96/x
  3. Step 3: Cross multiply
    364,643.52x = 547,209.92 × 127,986.96
  4. Step 4: Simplify right side
    364,643.52x = 70,035,734,142.64
  5. Step 5: Solve for x
    x = 70,035,734,142.64/364,643.52
  6. Step 6: Final answer
    x = 192,066.31

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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.