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Finding the Fourth Proportional to 10,786,818.90, 14,885,709.45 and 5,892,039.12

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Solution

The fourth proportional to 10,786,818.90, 14,885,709.45 and 5,892,039.12 is: 8,130,959.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,786,818.90 : 14,885,709.45 = 5,892,039.12 : x
  2. Step 2: Convert to fraction form
    10,786,818.90/14,885,709.45 = 5,892,039.12/x
  3. Step 3: Cross multiply
    10,786,818.90x = 14,885,709.45 × 5,892,039.12
  4. Step 4: Simplify right side
    10,786,818.90x = 87,707,182,408,353.69
  5. Step 5: Solve for x
    x = 87,707,182,408,353.69/10,786,818.90
  6. Step 6: Final answer
    x = 8,130,959.02

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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.