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Finding the Fourth Proportional to 12,563,217.20, 17,628,317.20 and 12,563,217.20

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Solution

The fourth proportional to 12,563,217.20, 17,628,317.20 and 12,563,217.20 is: 17,628,317.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,563,217.20 : 17,628,317.20 = 12,563,217.20 : x
  2. Step 2: Convert to fraction form
    12,563,217.20/17,628,317.20 = 12,563,217.20/x
  3. Step 3: Cross multiply
    12,563,217.20x = 17,628,317.20 × 12,563,217.20
  4. Step 4: Simplify right side
    12,563,217.20x = 221,468,377,854,095.81
  5. Step 5: Solve for x
    x = 221,468,377,854,095.81/12,563,217.20
  6. Step 6: Final answer
    x = 17,628,317.20

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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.