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Finding the Fourth Proportional to 79,638.47, 119,374.36 and 29,698.47

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Solution

The fourth proportional to 79,638.47, 119,374.36 and 29,698.47 is: 44,516.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,638.47 : 119,374.36 = 29,698.47 : x
  2. Step 2: Convert to fraction form
    79,638.47/119,374.36 = 29,698.47/x
  3. Step 3: Cross multiply
    79,638.47x = 119,374.36 × 29,698.47
  4. Step 4: Simplify right side
    79,638.47x = 3,545,236,110.72
  5. Step 5: Solve for x
    x = 3,545,236,110.72/79,638.47
  6. Step 6: Final answer
    x = 44,516.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.