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Finding the Fourth Proportional to 128,995.66, 193,494.57 and 35,506.54

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Solution

The fourth proportional to 128,995.66, 193,494.57 and 35,506.54 is: 53,260.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,995.66 : 193,494.57 = 35,506.54 : x
  2. Step 2: Convert to fraction form
    128,995.66/193,494.57 = 35,506.54/x
  3. Step 3: Cross multiply
    128,995.66x = 193,494.57 × 35,506.54
  4. Step 4: Simplify right side
    128,995.66x = 6,870,322,689.49
  5. Step 5: Solve for x
    x = 6,870,322,689.49/128,995.66
  6. Step 6: Final answer
    x = 53,260.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.