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Finding the Fourth Proportional to 58,770.99, 81,102.20 and 31,913.01

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Solution

The fourth proportional to 58,770.99, 81,102.20 and 31,913.01 is: 44,038.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,770.99 : 81,102.20 = 31,913.01 : x
  2. Step 2: Convert to fraction form
    58,770.99/81,102.20 = 31,913.01/x
  3. Step 3: Cross multiply
    58,770.99x = 81,102.20 × 31,913.01
  4. Step 4: Simplify right side
    58,770.99x = 2,588,215,160.06
  5. Step 5: Solve for x
    x = 2,588,215,160.06/58,770.99
  6. Step 6: Final answer
    x = 44,038.99

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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.