Home / 12,771,391.10-19,157,086.65-11,385,707.90

Finding the Fourth Proportional to 12,771,391.10, 19,157,086.65 and 11,385,707.90

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Solution

The fourth proportional to 12,771,391.10, 19,157,086.65 and 11,385,707.90 is: 17,078,561.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,771,391.10 : 19,157,086.65 = 11,385,707.90 : x
  2. Step 2: Convert to fraction form
    12,771,391.10/19,157,086.65 = 11,385,707.90/x
  3. Step 3: Cross multiply
    12,771,391.10x = 19,157,086.65 × 11,385,707.90
  4. Step 4: Simplify right side
    12,771,391.10x = 218,116,992,811,889.53
  5. Step 5: Solve for x
    x = 218,116,992,811,889.53/12,771,391.10
  6. Step 6: Final answer
    x = 17,078,561.85

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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.