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Finding the Fourth Proportional to 9,906,978.45, 14,874,464.48 and 6,127,842.45

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Solution

The fourth proportional to 9,906,978.45, 14,874,464.48 and 6,127,842.45 is: 9,200,421.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,906,978.45 : 14,874,464.48 = 6,127,842.45 : x
  2. Step 2: Convert to fraction form
    9,906,978.45/14,874,464.48 = 6,127,842.45/x
  3. Step 3: Cross multiply
    9,906,978.45x = 14,874,464.48 × 6,127,842.45
  4. Step 4: Simplify right side
    9,906,978.45x = 91,148,374,830,921.97
  5. Step 5: Solve for x
    x = 91,148,374,830,921.97/9,906,978.45
  6. Step 6: Final answer
    x = 9,200,421.23

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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.