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Finding the Fourth Proportional to 8,986,808.80, 13,480,213.20 and 6,861,044.80

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Solution

The fourth proportional to 8,986,808.80, 13,480,213.20 and 6,861,044.80 is: 10,291,567.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986,808.80 : 13,480,213.20 = 6,861,044.80 : x
  2. Step 2: Convert to fraction form
    8,986,808.80/13,480,213.20 = 6,861,044.80/x
  3. Step 3: Cross multiply
    8,986,808.80x = 13,480,213.20 × 6,861,044.80
  4. Step 4: Simplify right side
    8,986,808.80x = 92,488,346,678,751.36
  5. Step 5: Solve for x
    x = 92,488,346,678,751.36/8,986,808.80
  6. Step 6: Final answer
    x = 10,291,567.20

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Double scale
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Similar ratio
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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.