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Finding the Fourth Proportional to 6,872,702.22, 9,483,775.65 and 3,972,280.95

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Solution

The fourth proportional to 6,872,702.22, 9,483,775.65 and 3,972,280.95 is: 5,481,427.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872,702.22 : 9,483,775.65 = 3,972,280.95 : x
  2. Step 2: Convert to fraction form
    6,872,702.22/9,483,775.65 = 3,972,280.95/x
  3. Step 3: Cross multiply
    6,872,702.22x = 9,483,775.65 × 3,972,280.95
  4. Step 4: Simplify right side
    6,872,702.22x = 37,672,221,348,568.87
  5. Step 5: Solve for x
    x = 37,672,221,348,568.87/6,872,702.22
  6. Step 6: Final answer
    x = 5,481,427.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.