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Finding the Fourth Proportional to 66,917.72, 92,345.67 and 36,290.34

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Solution

The fourth proportional to 66,917.72, 92,345.67 and 36,290.34 is: 50,080.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,917.72 : 92,345.67 = 36,290.34 : x
  2. Step 2: Convert to fraction form
    66,917.72/92,345.67 = 36,290.34/x
  3. Step 3: Cross multiply
    66,917.72x = 92,345.67 × 36,290.34
  4. Step 4: Simplify right side
    66,917.72x = 3,351,255,761.83
  5. Step 5: Solve for x
    x = 3,351,255,761.83/66,917.72
  6. Step 6: Final answer
    x = 50,080.24

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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.