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Finding the Fourth Proportional to 112,141.87, 154,755.26 and 61,840.87

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Solution

The fourth proportional to 112,141.87, 154,755.26 and 61,840.87 is: 85,340.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,141.87 : 154,755.26 = 61,840.87 : x
  2. Step 2: Convert to fraction form
    112,141.87/154,755.26 = 61,840.87/x
  3. Step 3: Cross multiply
    112,141.87x = 154,755.26 × 61,840.87
  4. Step 4: Simplify right side
    112,141.87x = 9,570,199,451.29
  5. Step 5: Solve for x
    x = 9,570,199,451.29/112,141.87
  6. Step 6: Final answer
    x = 85,340.11

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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.