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Finding the Fourth Proportional to 58,205.78, 87,310.84 and 18,763.46

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Solution

The fourth proportional to 58,205.78, 87,310.84 and 18,763.46 is: 28,145.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,205.78 : 87,310.84 = 18,763.46 : x
  2. Step 2: Convert to fraction form
    58,205.78/87,310.84 = 18,763.46/x
  3. Step 3: Cross multiply
    58,205.78x = 87,310.84 × 18,763.46
  4. Step 4: Simplify right side
    58,205.78x = 1,638,253,453.91
  5. Step 5: Solve for x
    x = 1,638,253,453.91/58,205.78
  6. Step 6: Final answer
    x = 28,145.89

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1.5x scale

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.