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Finding the Fourth Proportional to 141,999.95, 195,969.44 and 81,590.15

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Solution

The fourth proportional to 141,999.95, 195,969.44 and 81,590.15 is: 112,599.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,999.95 : 195,969.44 = 81,590.15 : x
  2. Step 2: Convert to fraction form
    141,999.95/195,969.44 = 81,590.15/x
  3. Step 3: Cross multiply
    141,999.95x = 195,969.44 × 81,590.15
  4. Step 4: Simplify right side
    141,999.95x = 15,989,176,005.02
  5. Step 5: Solve for x
    x = 15,989,176,005.02/141,999.95
  6. Step 6: Final answer
    x = 112,599.87

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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.