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Finding the Fourth Proportional to 171,988.88, 257,984.76 and 47,336.72

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Solution

The fourth proportional to 171,988.88, 257,984.76 and 47,336.72 is: 71,005.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,988.88 : 257,984.76 = 47,336.72 : x
  2. Step 2: Convert to fraction form
    171,988.88/257,984.76 = 47,336.72/x
  3. Step 3: Cross multiply
    171,988.88x = 257,984.76 × 47,336.72
  4. Step 4: Simplify right side
    171,988.88x = 12,212,152,348.39
  5. Step 5: Solve for x
    x = 12,212,152,348.39/171,988.88
  6. Step 6: Final answer
    x = 71,005.48

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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.