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Finding the Fourth Proportional to 58,771.19, 81,103.95 and 31,913.46

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Solution

The fourth proportional to 58,771.19, 81,103.95 and 31,913.46 is: 44,040.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,771.19 : 81,103.95 = 31,913.46 : x
  2. Step 2: Convert to fraction form
    58,771.19/81,103.95 = 31,913.46/x
  3. Step 3: Cross multiply
    58,771.19x = 81,103.95 × 31,913.46
  4. Step 4: Simplify right side
    58,771.19x = 2,588,307,664.17
  5. Step 5: Solve for x
    x = 2,588,307,664.17/58,771.19
  6. Step 6: Final answer
    x = 44,040.42

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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.