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Finding the Fourth Proportional to 85,988.44, 118,665.03 and 47,748.74

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Solution

The fourth proportional to 85,988.44, 118,665.03 and 47,748.74 is: 65,893.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,988.44 : 118,665.03 = 47,748.74 : x
  2. Step 2: Convert to fraction form
    85,988.44/118,665.03 = 47,748.74/x
  3. Step 3: Cross multiply
    85,988.44x = 118,665.03 × 47,748.74
  4. Step 4: Simplify right side
    85,988.44x = 5,666,105,514.91
  5. Step 5: Solve for x
    x = 5,666,105,514.91/85,988.44
  6. Step 6: Final answer
    x = 65,893.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.