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Finding the Fourth Proportional to 51,327.88, 76,985.42 and 14,394.76

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Solution

The fourth proportional to 51,327.88, 76,985.42 and 14,394.76 is: 21,590.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,327.88 : 76,985.42 = 14,394.76 : x
  2. Step 2: Convert to fraction form
    51,327.88/76,985.42 = 14,394.76/x
  3. Step 3: Cross multiply
    51,327.88x = 76,985.42 × 14,394.76
  4. Step 4: Simplify right side
    51,327.88x = 1,108,186,644.40
  5. Step 5: Solve for x
    x = 1,108,186,644.40/51,327.88
  6. Step 6: Final answer
    x = 21,590.35

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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.