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Finding the Fourth Proportional to 68,708.85, 94,820.94 and 38,494.41

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Solution

The fourth proportional to 68,708.85, 94,820.94 and 38,494.41 is: 53,123.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,708.85 : 94,820.94 = 38,494.41 : x
  2. Step 2: Convert to fraction form
    68,708.85/94,820.94 = 38,494.41/x
  3. Step 3: Cross multiply
    68,708.85x = 94,820.94 × 38,494.41
  4. Step 4: Simplify right side
    68,708.85x = 3,650,076,140.95
  5. Step 5: Solve for x
    x = 3,650,076,140.95/68,708.85
  6. Step 6: Final answer
    x = 53,123.81

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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.