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Finding the Fourth Proportional to 68,385.60, 94,370.88 and 38,577.60

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Solution

The fourth proportional to 68,385.60, 94,370.88 and 38,577.60 is: 53,236.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,385.60 : 94,370.88 = 38,577.60 : x
  2. Step 2: Convert to fraction form
    68,385.60/94,370.88 = 38,577.60/x
  3. Step 3: Cross multiply
    68,385.60x = 94,370.88 × 38,577.60
  4. Step 4: Simplify right side
    68,385.60x = 3,640,602,060.29
  5. Step 5: Solve for x
    x = 3,640,602,060.29/68,385.60
  6. Step 6: Final answer
    x = 53,236.38

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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.