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Finding the Fourth Proportional to 18,683,513.15, 28,025,269.73 and 18,683,513.15

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Solution

The fourth proportional to 18,683,513.15, 28,025,269.73 and 18,683,513.15 is: 28,025,269.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683,513.15 : 28,025,269.73 = 18,683,513.15 : x
  2. Step 2: Convert to fraction form
    18,683,513.15/28,025,269.73 = 18,683,513.15/x
  3. Step 3: Cross multiply
    18,683,513.15x = 28,025,269.73 × 18,683,513.15
  4. Step 4: Simplify right side
    18,683,513.15x = 523,610,495,439,334.38
  5. Step 5: Solve for x
    x = 523,610,495,439,334.38/18,683,513.15
  6. Step 6: Final answer
    x = 28,025,269.73

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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.