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Finding the Fourth Proportional to 14,734,978.82, 20,186,992.99 and 14,182,715.76

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Solution

The fourth proportional to 14,734,978.82, 20,186,992.99 and 14,182,715.76 is: 19,430,389.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,734,978.82 : 20,186,992.99 = 14,182,715.76 : x
  2. Step 2: Convert to fraction form
    14,734,978.82/20,186,992.99 = 14,182,715.76/x
  3. Step 3: Cross multiply
    14,734,978.82x = 20,186,992.99 × 14,182,715.76
  4. Step 4: Simplify right side
    14,734,978.82x = 286,306,383,488,531.88
  5. Step 5: Solve for x
    x = 286,306,383,488,531.88/14,734,978.82
  6. Step 6: Final answer
    x = 19,430,389.89

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.