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Finding the Fourth Proportional to 18,704,737.80, 28,057,106.70 and 18,144,865.80

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Solution

The fourth proportional to 18,704,737.80, 28,057,106.70 and 18,144,865.80 is: 27,217,298.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704,737.80 : 28,057,106.70 = 18,144,865.80 : x
  2. Step 2: Convert to fraction form
    18,704,737.80/28,057,106.70 = 18,144,865.80/x
  3. Step 3: Cross multiply
    18,704,737.80x = 28,057,106.70 × 18,144,865.80
  4. Step 4: Simplify right side
    18,704,737.80x = 509,092,435,807,780.88
  5. Step 5: Solve for x
    x = 509,092,435,807,780.88/18,704,737.80
  6. Step 6: Final answer
    x = 27,217,298.70

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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.