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Finding the Fourth Proportional to 37,768.60, 56,658.30 and 12,809.80

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Solution

The fourth proportional to 37,768.60, 56,658.30 and 12,809.80 is: 19,216.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,768.60 : 56,658.30 = 12,809.80 : x
  2. Step 2: Convert to fraction form
    37,768.60/56,658.30 = 12,809.80/x
  3. Step 3: Cross multiply
    37,768.60x = 56,658.30 × 12,809.80
  4. Step 4: Simplify right side
    37,768.60x = 725,781,491.34
  5. Step 5: Solve for x
    x = 725,781,491.34/37,768.60
  6. Step 6: Final answer
    x = 19,216.53

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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.