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Finding the Fourth Proportional to 69,212,117.20, 103,818,175.80 and 69,212,117.20

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Solution

The fourth proportional to 69,212,117.20, 103,818,175.80 and 69,212,117.20 is: 103,818,175.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,212,117.20 : 103,818,175.80 = 69,212,117.20 : x
  2. Step 2: Convert to fraction form
    69,212,117.20/103,818,175.80 = 69,212,117.20/x
  3. Step 3: Cross multiply
    69,212,117.20x = 103,818,175.80 × 69,212,117.20
  4. Step 4: Simplify right side
    69,212,117.20x = 7,185,475,750,959,804
  5. Step 5: Solve for x
    x = 7,185,475,750,959,804/69,212,117.20
  6. Step 6: Final answer
    x = 103,818,175.80

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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.