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Finding the Fourth Proportional to 364,973.61, 547,478.64 and 140,255.31

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Solution

The fourth proportional to 364,973.61, 547,478.64 and 140,255.31 is: 210,389.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,973.61 : 547,478.64 = 140,255.31 : x
  2. Step 2: Convert to fraction form
    364,973.61/547,478.64 = 140,255.31/x
  3. Step 3: Cross multiply
    364,973.61x = 547,478.64 × 140,255.31
  4. Step 4: Simplify right side
    364,973.61x = 76,786,786,371.58
  5. Step 5: Solve for x
    x = 76,786,786,371.58/364,973.61
  6. Step 6: Final answer
    x = 210,389.97

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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.