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Finding the Fourth Proportional to 18,095,807.20, 27,143,710.80 and 15,261,455.20

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Solution

The fourth proportional to 18,095,807.20, 27,143,710.80 and 15,261,455.20 is: 22,892,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,095,807.20 : 27,143,710.80 = 15,261,455.20 : x
  2. Step 2: Convert to fraction form
    18,095,807.20/27,143,710.80 = 15,261,455.20/x
  3. Step 3: Cross multiply
    18,095,807.20x = 27,143,710.80 × 15,261,455.20
  4. Step 4: Simplify right side
    18,095,807.20x = 414,252,526,335,956.12
  5. Step 5: Solve for x
    x = 414,252,526,335,956.12/18,095,807.20
  6. Step 6: Final answer
    x = 22,892,182.80

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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.