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Finding the Fourth Proportional to 31,195.80, 46,793.70 and 12,484.80

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Solution

The fourth proportional to 31,195.80, 46,793.70 and 12,484.80 is: 18,727.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,195.80 : 46,793.70 = 12,484.80 : x
  2. Step 2: Convert to fraction form
    31,195.80/46,793.70 = 12,484.80/x
  3. Step 3: Cross multiply
    31,195.80x = 46,793.70 × 12,484.80
  4. Step 4: Simplify right side
    31,195.80x = 584,209,985.76
  5. Step 5: Solve for x
    x = 584,209,985.76/31,195.80
  6. Step 6: Final answer
    x = 18,727.20

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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.