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Finding the Fourth Proportional to 66,874.48, 92,076.96 and 56,782.96

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Solution

The fourth proportional to 66,874.48, 92,076.96 and 56,782.96 is: 78,182.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,874.48 : 92,076.96 = 56,782.96 : x
  2. Step 2: Convert to fraction form
    66,874.48/92,076.96 = 56,782.96/x
  3. Step 3: Cross multiply
    66,874.48x = 92,076.96 × 56,782.96
  4. Step 4: Simplify right side
    66,874.48x = 5,228,402,336.60
  5. Step 5: Solve for x
    x = 5,228,402,336.60/66,874.48
  6. Step 6: Final answer
    x = 78,182.33

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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.