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Finding the Fourth Proportional to 18,388,114.52, 25,375,596.81 and 10,657,640.87

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Solution

The fourth proportional to 18,388,114.52, 25,375,596.81 and 10,657,640.87 is: 14,707,543.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388,114.52 : 25,375,596.81 = 10,657,640.87 : x
  2. Step 2: Convert to fraction form
    18,388,114.52/25,375,596.81 = 10,657,640.87/x
  3. Step 3: Cross multiply
    18,388,114.52x = 25,375,596.81 × 10,657,640.87
  4. Step 4: Simplify right side
    18,388,114.52x = 270,443,997,536,019.62
  5. Step 5: Solve for x
    x = 270,443,997,536,019.62/18,388,114.52
  6. Step 6: Final answer
    x = 14,707,543.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.