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Finding the Fourth Proportional to 58,206.80, 87,348.60 and 21,270.80

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Solution

The fourth proportional to 58,206.80, 87,348.60 and 21,270.80 is: 31,920.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,206.80 : 87,348.60 = 21,270.80 : x
  2. Step 2: Convert to fraction form
    58,206.80/87,348.60 = 21,270.80/x
  3. Step 3: Cross multiply
    58,206.80x = 87,348.60 × 21,270.80
  4. Step 4: Simplify right side
    58,206.80x = 1,857,974,600.88
  5. Step 5: Solve for x
    x = 1,857,974,600.88/58,206.80
  6. Step 6: Final answer
    x = 31,920.23

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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.