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Finding the Fourth Proportional to 69,220,128.70, 103,830,193.05 and 69,220,128.70

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Solution

The fourth proportional to 69,220,128.70, 103,830,193.05 and 69,220,128.70 is: 103,830,193.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,220,128.70 : 103,830,193.05 = 69,220,128.70 : x
  2. Step 2: Convert to fraction form
    69,220,128.70/103,830,193.05 = 69,220,128.70/x
  3. Step 3: Cross multiply
    69,220,128.70x = 103,830,193.05 × 69,220,128.70
  4. Step 4: Simplify right side
    69,220,128.70x = 7,187,139,325,866,846
  5. Step 5: Solve for x
    x = 7,187,139,325,866,846/69,220,128.70
  6. Step 6: Final answer
    x = 103,830,193.05

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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.