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Finding the Fourth Proportional to 8,616,978.13, 11,891,453.94 and 4,749,514.67

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Solution

The fourth proportional to 8,616,978.13, 11,891,453.94 and 4,749,514.67 is: 6,554,343.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616,978.13 : 11,891,453.94 = 4,749,514.67 : x
  2. Step 2: Convert to fraction form
    8,616,978.13/11,891,453.94 = 4,749,514.67/x
  3. Step 3: Cross multiply
    8,616,978.13x = 11,891,453.94 × 4,749,514.67
  4. Step 4: Simplify right side
    8,616,978.13x = 56,478,634,935,659.30
  5. Step 5: Solve for x
    x = 56,478,634,935,659.30/8,616,978.13
  6. Step 6: Final answer
    x = 6,554,343.54

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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.