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Finding the Fourth Proportional to 66,783.94, 92,160.96 and 38,102.86

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Solution

The fourth proportional to 66,783.94, 92,160.96 and 38,102.86 is: 52,581.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,783.94 : 92,160.96 = 38,102.86 : x
  2. Step 2: Convert to fraction form
    66,783.94/92,160.96 = 38,102.86/x
  3. Step 3: Cross multiply
    66,783.94x = 92,160.96 × 38,102.86
  4. Step 4: Simplify right side
    66,783.94x = 3,511,595,695.54
  5. Step 5: Solve for x
    x = 3,511,595,695.54/66,783.94
  6. Step 6: Final answer
    x = 52,581.44

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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.