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Finding the Fourth Proportional to 58,622.70, 87,915.69 and 21,177.84

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Solution

The fourth proportional to 58,622.70, 87,915.69 and 21,177.84 is: 31,760.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,622.70 : 87,915.69 = 21,177.84 : x
  2. Step 2: Convert to fraction form
    58,622.70/87,915.69 = 21,177.84/x
  3. Step 3: Cross multiply
    58,622.70x = 87,915.69 × 21,177.84
  4. Step 4: Simplify right side
    58,622.70x = 1,861,864,416.31
  5. Step 5: Solve for x
    x = 1,861,864,416.31/58,622.70
  6. Step 6: Final answer
    x = 31,760.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.