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Finding the Fourth Proportional to 13,906,613.80, 20,859,920.70 and 4,929,999.40

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Solution

The fourth proportional to 13,906,613.80, 20,859,920.70 and 4,929,999.40 is: 7,394,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,906,613.80 : 20,859,920.70 = 4,929,999.40 : x
  2. Step 2: Convert to fraction form
    13,906,613.80/20,859,920.70 = 4,929,999.40/x
  3. Step 3: Cross multiply
    13,906,613.80x = 20,859,920.70 × 4,929,999.40
  4. Step 4: Simplify right side
    13,906,613.80x = 102,839,396,535,047.58
  5. Step 5: Solve for x
    x = 102,839,396,535,047.58/13,906,613.80
  6. Step 6: Final answer
    x = 7,394,999.10

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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.