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Finding the Fourth Proportional to 8,710.70, 12,020.20 and 4,934.66

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Solution

The fourth proportional to 8,710.70, 12,020.20 and 4,934.66 is: 6,809.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,710.70 : 12,020.20 = 4,934.66 : x
  2. Step 2: Convert to fraction form
    8,710.70/12,020.20 = 4,934.66/x
  3. Step 3: Cross multiply
    8,710.70x = 12,020.20 × 4,934.66
  4. Step 4: Simplify right side
    8,710.70x = 59,315,527.69
  5. Step 5: Solve for x
    x = 59,315,527.69/8,710.70
  6. Step 6: Final answer
    x = 6,809.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.