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Finding the Fourth Proportional to 69,994.77, 96,590.37 and 39,779.56

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Solution

The fourth proportional to 69,994.77, 96,590.37 and 39,779.56 is: 54,894.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,994.77 : 96,590.37 = 39,779.56 : x
  2. Step 2: Convert to fraction form
    69,994.77/96,590.37 = 39,779.56/x
  3. Step 3: Cross multiply
    69,994.77x = 96,590.37 × 39,779.56
  4. Step 4: Simplify right side
    69,994.77x = 3,842,322,418.84
  5. Step 5: Solve for x
    x = 3,842,322,418.84/69,994.77
  6. Step 6: Final answer
    x = 54,894.43

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Double scale
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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.