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Finding the Fourth Proportional to 58,769.55, 81,101.72 and 31,911.84

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Solution

The fourth proportional to 58,769.55, 81,101.72 and 31,911.84 is: 44,038.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,769.55 : 81,101.72 = 31,911.84 : x
  2. Step 2: Convert to fraction form
    58,769.55/81,101.72 = 31,911.84/x
  3. Step 3: Cross multiply
    58,769.55x = 81,101.72 × 31,911.84
  4. Step 4: Simplify right side
    58,769.55x = 2,588,105,192.14
  5. Step 5: Solve for x
    x = 2,588,105,192.14/58,769.55
  6. Step 6: Final answer
    x = 44,038.20

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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.