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Finding the Fourth Proportional to 9,978,885.44, 13,772,998.32 and 6,305,469.92

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Solution

The fourth proportional to 9,978,885.44, 13,772,998.32 and 6,305,469.92 is: 8,702,898.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,978,885.44 : 13,772,998.32 = 6,305,469.92 : x
  2. Step 2: Convert to fraction form
    9,978,885.44/13,772,998.32 = 6,305,469.92/x
  3. Step 3: Cross multiply
    9,978,885.44x = 13,772,998.32 × 6,305,469.92
  4. Step 4: Simplify right side
    9,978,885.44x = 86,845,226,614,970.53
  5. Step 5: Solve for x
    x = 86,845,226,614,970.53/9,978,885.44
  6. Step 6: Final answer
    x = 8,702,898.45

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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.