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Finding the Fourth Proportional to 11,354,691.50, 15,665,365.95 and 8,741,990.06

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Solution

The fourth proportional to 11,354,691.50, 15,665,365.95 and 8,741,990.06 is: 12,060,783.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,354,691.50 : 15,665,365.95 = 8,741,990.06 : x
  2. Step 2: Convert to fraction form
    11,354,691.50/15,665,365.95 = 8,741,990.06/x
  3. Step 3: Cross multiply
    11,354,691.50x = 15,665,365.95 × 8,741,990.06
  4. Step 4: Simplify right side
    11,354,691.50x = 136,946,473,421,162.45
  5. Step 5: Solve for x
    x = 136,946,473,421,162.45/11,354,691.50
  6. Step 6: Final answer
    x = 12,060,783.28

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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.