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Finding the Fourth Proportional to 18,150,387.30, 25,429,437.90 and 18,150,387.30

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Solution

The fourth proportional to 18,150,387.30, 25,429,437.90 and 18,150,387.30 is: 25,429,437.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,150,387.30 : 25,429,437.90 = 18,150,387.30 : x
  2. Step 2: Convert to fraction form
    18,150,387.30/25,429,437.90 = 18,150,387.30/x
  3. Step 3: Cross multiply
    18,150,387.30x = 25,429,437.90 × 18,150,387.30
  4. Step 4: Simplify right side
    18,150,387.30x = 461,554,146,706,298.69
  5. Step 5: Solve for x
    x = 461,554,146,706,298.69/18,150,387.30
  6. Step 6: Final answer
    x = 25,429,437.90

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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.