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Finding the Fourth Proportional to 7,262,805.20, 10,894,207.80 and 1,944,021.20

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Solution

The fourth proportional to 7,262,805.20, 10,894,207.80 and 1,944,021.20 is: 2,916,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,262,805.20 : 10,894,207.80 = 1,944,021.20 : x
  2. Step 2: Convert to fraction form
    7,262,805.20/10,894,207.80 = 1,944,021.20/x
  3. Step 3: Cross multiply
    7,262,805.20x = 10,894,207.80 × 1,944,021.20
  4. Step 4: Simplify right side
    7,262,805.20x = 21,178,570,920,405.36
  5. Step 5: Solve for x
    x = 21,178,570,920,405.36/7,262,805.20
  6. Step 6: Final answer
    x = 2,916,031.80

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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.