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Finding the Fourth Proportional to 18,783,068.70, 28,174,603.05 and 18,783,068.70

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Solution

The fourth proportional to 18,783,068.70, 28,174,603.05 and 18,783,068.70 is: 28,174,603.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783,068.70 : 28,174,603.05 = 18,783,068.70 : x
  2. Step 2: Convert to fraction form
    18,783,068.70/28,174,603.05 = 18,783,068.70/x
  3. Step 3: Cross multiply
    18,783,068.70x = 28,174,603.05 × 18,783,068.70
  4. Step 4: Simplify right side
    18,783,068.70x = 529,205,504,683,379.50
  5. Step 5: Solve for x
    x = 529,205,504,683,379.50/18,783,068.70
  6. Step 6: Final answer
    x = 28,174,603.05

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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.