Home / 19,152,136.60-28,728,204.90-11,971,778.20

Finding the Fourth Proportional to 19,152,136.60, 28,728,204.90 and 11,971,778.20

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Solution

The fourth proportional to 19,152,136.60, 28,728,204.90 and 11,971,778.20 is: 17,957,667.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,152,136.60 : 28,728,204.90 = 11,971,778.20 : x
  2. Step 2: Convert to fraction form
    19,152,136.60/28,728,204.90 = 11,971,778.20/x
  3. Step 3: Cross multiply
    19,152,136.60x = 28,728,204.90 × 11,971,778.20
  4. Step 4: Simplify right side
    19,152,136.60x = 343,927,697,146,953.12
  5. Step 5: Solve for x
    x = 343,927,697,146,953.12/19,152,136.60
  6. Step 6: Final answer
    x = 17,957,667.30

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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.