Home / 129,628.64-194,442.96-40,889.07

Finding the Fourth Proportional to 129,628.64, 194,442.96 and 40,889.07

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Solution

The fourth proportional to 129,628.64, 194,442.96 and 40,889.07 is: 61,333.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,628.64 : 194,442.96 = 40,889.07 : x
  2. Step 2: Convert to fraction form
    129,628.64/194,442.96 = 40,889.07/x
  3. Step 3: Cross multiply
    129,628.64x = 194,442.96 × 40,889.07
  4. Step 4: Simplify right side
    129,628.64x = 7,950,591,802.45
  5. Step 5: Solve for x
    x = 7,950,591,802.45/129,628.64
  6. Step 6: Final answer
    x = 61,333.61

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Double scale
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Similar ratio
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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.