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Finding the Fourth Proportional to 7,284,815.20, 10,213,671.20 and 7,284,815.20

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Solution

The fourth proportional to 7,284,815.20, 10,213,671.20 and 7,284,815.20 is: 10,213,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,284,815.20 : 10,213,671.20 = 7,284,815.20 : x
  2. Step 2: Convert to fraction form
    7,284,815.20/10,213,671.20 = 7,284,815.20/x
  3. Step 3: Cross multiply
    7,284,815.20x = 10,213,671.20 × 7,284,815.20
  4. Step 4: Simplify right side
    7,284,815.20x = 74,404,707,205,562.23
  5. Step 5: Solve for x
    x = 74,404,707,205,562.23/7,284,815.20
  6. Step 6: Final answer
    x = 10,213,671.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.