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Finding the Fourth Proportional to 11,958,139.40, 16,703,603.80 and 11,958,139.40

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Solution

The fourth proportional to 11,958,139.40, 16,703,603.80 and 11,958,139.40 is: 16,703,603.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,958,139.40 : 16,703,603.80 = 11,958,139.40 : x
  2. Step 2: Convert to fraction form
    11,958,139.40/16,703,603.80 = 11,958,139.40/x
  3. Step 3: Cross multiply
    11,958,139.40x = 16,703,603.80 × 11,958,139.40
  4. Step 4: Simplify right side
    11,958,139.40x = 199,744,022,722,769.75
  5. Step 5: Solve for x
    x = 199,744,022,722,769.75/11,958,139.40
  6. Step 6: Final answer
    x = 16,703,603.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.