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Finding the Fourth Proportional to 10,858,745.90, 14,978,182.80 and 6,670,597.16

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Solution

The fourth proportional to 10,858,745.90, 14,978,182.80 and 6,670,597.16 is: 9,201,193.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,858,745.90 : 14,978,182.80 = 6,670,597.16 : x
  2. Step 2: Convert to fraction form
    10,858,745.90/14,978,182.80 = 6,670,597.16/x
  3. Step 3: Cross multiply
    10,858,745.90x = 14,978,182.80 × 6,670,597.16
  4. Step 4: Simplify right side
    10,858,745.90x = 99,913,423,647,640.86
  5. Step 5: Solve for x
    x = 99,913,423,647,640.86/10,858,745.90
  6. Step 6: Final answer
    x = 9,201,193.63

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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.