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Finding the Fourth Proportional to 15,772,794.86, 21,766,447.76 and 8,529,450.86

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Solution

The fourth proportional to 15,772,794.86, 21,766,447.76 and 8,529,450.86 is: 11,770,637.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,772,794.86 : 21,766,447.76 = 8,529,450.86 : x
  2. Step 2: Convert to fraction form
    15,772,794.86/21,766,447.76 = 8,529,450.86/x
  3. Step 3: Cross multiply
    15,772,794.86x = 21,766,447.76 × 8,529,450.86
  4. Step 4: Simplify right side
    15,772,794.86x = 185,655,846,565,677.06
  5. Step 5: Solve for x
    x = 185,655,846,565,677.06/15,772,794.86
  6. Step 6: Final answer
    x = 11,770,637.24

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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.