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Finding the Fourth Proportional to 78,666.91, 108,561.08 and 44,676.11

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Solution

The fourth proportional to 78,666.91, 108,561.08 and 44,676.11 is: 61,653.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,666.91 : 108,561.08 = 44,676.11 : x
  2. Step 2: Convert to fraction form
    78,666.91/108,561.08 = 44,676.11/x
  3. Step 3: Cross multiply
    78,666.91x = 108,561.08 × 44,676.11
  4. Step 4: Simplify right side
    78,666.91x = 4,850,086,751.80
  5. Step 5: Solve for x
    x = 4,850,086,751.80/78,666.91
  6. Step 6: Final answer
    x = 61,653.45

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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.