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Finding the Fourth Proportional to 18,829,309.05, 28,243,963.58 and 18,829,309.05

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Solution

The fourth proportional to 18,829,309.05, 28,243,963.58 and 18,829,309.05 is: 28,243,963.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,829,309.05 : 28,243,963.58 = 18,829,309.05 : x
  2. Step 2: Convert to fraction form
    18,829,309.05/28,243,963.58 = 18,829,309.05/x
  3. Step 3: Cross multiply
    18,829,309.05x = 28,243,963.58 × 18,829,309.05
  4. Step 4: Simplify right side
    18,829,309.05x = 531,814,318,950,617.88
  5. Step 5: Solve for x
    x = 531,814,318,950,617.88/18,829,309.05
  6. Step 6: Final answer
    x = 28,243,963.58

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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.