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Finding the Fourth Proportional to 12,771,605.60, 19,157,408.40 and 11,385,922.40

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Solution

The fourth proportional to 12,771,605.60, 19,157,408.40 and 11,385,922.40 is: 17,078,883.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,771,605.60 : 19,157,408.40 = 11,385,922.40 : x
  2. Step 2: Convert to fraction form
    12,771,605.60/19,157,408.40 = 11,385,922.40/x
  3. Step 3: Cross multiply
    12,771,605.60x = 19,157,408.40 × 11,385,922.40
  4. Step 4: Simplify right side
    12,771,605.60x = 218,124,765,427,508.16
  5. Step 5: Solve for x
    x = 218,124,765,427,508.16/12,771,605.60
  6. Step 6: Final answer
    x = 17,078,883.60

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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.