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Finding the Fourth Proportional to 8,662,521.17, 12,993,746.34 and 2,185,611.68

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Solution

The fourth proportional to 8,662,521.17, 12,993,746.34 and 2,185,611.68 is: 3,278,408.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,662,521.17 : 12,993,746.34 = 2,185,611.68 : x
  2. Step 2: Convert to fraction form
    8,662,521.17/12,993,746.34 = 2,185,611.68/x
  3. Step 3: Cross multiply
    8,662,521.17x = 12,993,746.34 × 2,185,611.68
  4. Step 4: Simplify right side
    8,662,521.17x = 28,399,283,767,661.25
  5. Step 5: Solve for x
    x = 28,399,283,767,661.25/8,662,521.17
  6. Step 6: Final answer
    x = 3,278,408.58

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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.