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Finding the Fourth Proportional to 18,944,062.80, 28,416,094.20 and 11,777,701.20

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Solution

The fourth proportional to 18,944,062.80, 28,416,094.20 and 11,777,701.20 is: 17,666,551.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,944,062.80 : 28,416,094.20 = 11,777,701.20 : x
  2. Step 2: Convert to fraction form
    18,944,062.80/28,416,094.20 = 11,777,701.20/x
  3. Step 3: Cross multiply
    18,944,062.80x = 28,416,094.20 × 11,777,701.20
  4. Step 4: Simplify right side
    18,944,062.80x = 334,676,266,758,653
  5. Step 5: Solve for x
    x = 334,676,266,758,653/18,944,062.80
  6. Step 6: Final answer
    x = 17,666,551.80

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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.