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Finding the Fourth Proportional to 77,914.98, 107,530.96 and 45,676.72

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Solution

The fourth proportional to 77,914.98, 107,530.96 and 45,676.72 is: 63,038.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,914.98 : 107,530.96 = 45,676.72 : x
  2. Step 2: Convert to fraction form
    77,914.98/107,530.96 = 45,676.72/x
  3. Step 3: Cross multiply
    77,914.98x = 107,530.96 × 45,676.72
  4. Step 4: Simplify right side
    77,914.98x = 4,911,661,551.25
  5. Step 5: Solve for x
    x = 4,911,661,551.25/77,914.98
  6. Step 6: Final answer
    x = 63,038.73

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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.