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Finding the Fourth Proportional to 58,798.32, 81,143.14 and 31,940.82

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Solution

The fourth proportional to 58,798.32, 81,143.14 and 31,940.82 is: 44,079.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,798.32 : 81,143.14 = 31,940.82 : x
  2. Step 2: Convert to fraction form
    58,798.32/81,143.14 = 31,940.82/x
  3. Step 3: Cross multiply
    58,798.32x = 81,143.14 × 31,940.82
  4. Step 4: Simplify right side
    58,798.32x = 2,591,778,428.97
  5. Step 5: Solve for x
    x = 2,591,778,428.97/58,798.32
  6. Step 6: Final answer
    x = 44,079.12

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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.