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Finding the Fourth Proportional to 58,740.86, 81,063 and 31,883.60

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Solution

The fourth proportional to 58,740.86, 81,063 and 31,883.60 is: 43,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,740.86 : 81,063 = 31,883.60 : x
  2. Step 2: Convert to fraction form
    58,740.86/81,063 = 31,883.60/x
  3. Step 3: Cross multiply
    58,740.86x = 81,063 × 31,883.60
  4. Step 4: Simplify right side
    58,740.86x = 2,584,580,266.80
  5. Step 5: Solve for x
    x = 2,584,580,266.80/58,740.86
  6. Step 6: Final answer
    x = 43,999.70

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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.