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Finding the Fourth Proportional to 128,893.70, 193,411.02 and 50,011.04

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Solution

The fourth proportional to 128,893.70, 193,411.02 and 50,011.04 is: 75,043.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,893.70 : 193,411.02 = 50,011.04 : x
  2. Step 2: Convert to fraction form
    128,893.70/193,411.02 = 50,011.04/x
  3. Step 3: Cross multiply
    128,893.70x = 193,411.02 × 50,011.04
  4. Step 4: Simplify right side
    128,893.70x = 9,672,686,257.66
  5. Step 5: Solve for x
    x = 9,672,686,257.66/128,893.70
  6. Step 6: Final answer
    x = 75,043.90

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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.