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Finding the Fourth Proportional to 8,628,064.79, 11,906,978.69 and 4,760,835.07

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Solution

The fourth proportional to 8,628,064.79, 11,906,978.69 and 4,760,835.07 is: 6,570,089.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628,064.79 : 11,906,978.69 = 4,760,835.07 : x
  2. Step 2: Convert to fraction form
    8,628,064.79/11,906,978.69 = 4,760,835.07/x
  3. Step 3: Cross multiply
    8,628,064.79x = 11,906,978.69 × 4,760,835.07
  4. Step 4: Simplify right side
    8,628,064.79x = 56,687,161,669,286.81
  5. Step 5: Solve for x
    x = 56,687,161,669,286.81/8,628,064.79
  6. Step 6: Final answer
    x = 6,570,089.94

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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.