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Finding the Fourth Proportional to 58,748.88, 81,046.60 and 40,886.48

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Solution

The fourth proportional to 58,748.88, 81,046.60 and 40,886.48 is: 56,404.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,748.88 : 81,046.60 = 40,886.48 : x
  2. Step 2: Convert to fraction form
    58,748.88/81,046.60 = 40,886.48/x
  3. Step 3: Cross multiply
    58,748.88x = 81,046.60 × 40,886.48
  4. Step 4: Simplify right side
    58,748.88x = 3,313,710,189.97
  5. Step 5: Solve for x
    x = 3,313,710,189.97/58,748.88
  6. Step 6: Final answer
    x = 56,404.65

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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.