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Finding the Fourth Proportional to 85,776.85, 118,355.15 and 53,927.25

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Solution

The fourth proportional to 85,776.85, 118,355.15 and 53,927.25 is: 74,408.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,776.85 : 118,355.15 = 53,927.25 : x
  2. Step 2: Convert to fraction form
    85,776.85/118,355.15 = 53,927.25/x
  3. Step 3: Cross multiply
    85,776.85x = 118,355.15 × 53,927.25
  4. Step 4: Simplify right side
    85,776.85x = 6,382,567,453.82
  5. Step 5: Solve for x
    x = 6,382,567,453.82/85,776.85
  6. Step 6: Final answer
    x = 74,408.97

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1.5x scale

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.