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Finding the Fourth Proportional to 112,495.68, 155,274.84 and 70,029

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Solution

The fourth proportional to 112,495.68, 155,274.84 and 70,029 is: 96,659.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,495.68 : 155,274.84 = 70,029 : x
  2. Step 2: Convert to fraction form
    112,495.68/155,274.84 = 70,029/x
  3. Step 3: Cross multiply
    112,495.68x = 155,274.84 × 70,029
  4. Step 4: Simplify right side
    112,495.68x = 10,873,741,770.36
  5. Step 5: Solve for x
    x = 10,873,741,770.36/112,495.68
  6. Step 6: Final answer
    x = 96,659.19

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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.