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Finding the Fourth Proportional to 58,840.71, 81,201.75 and 31,985.02

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Solution

The fourth proportional to 58,840.71, 81,201.75 and 31,985.02 is: 44,140.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,840.71 : 81,201.75 = 31,985.02 : x
  2. Step 2: Convert to fraction form
    58,840.71/81,201.75 = 31,985.02/x
  3. Step 3: Cross multiply
    58,840.71x = 81,201.75 × 31,985.02
  4. Step 4: Simplify right side
    58,840.71x = 2,597,239,597.79
  5. Step 5: Solve for x
    x = 2,597,239,597.79/58,840.71
  6. Step 6: Final answer
    x = 44,140.18

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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.