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Finding the Fourth Proportional to 128,014.62, 191,838.90 and 94,013.94

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Solution

The fourth proportional to 128,014.62, 191,838.90 and 94,013.94 is: 140,886.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,014.62 : 191,838.90 = 94,013.94 : x
  2. Step 2: Convert to fraction form
    128,014.62/191,838.90 = 94,013.94/x
  3. Step 3: Cross multiply
    128,014.62x = 191,838.90 × 94,013.94
  4. Step 4: Simplify right side
    128,014.62x = 18,035,530,834.27
  5. Step 5: Solve for x
    x = 18,035,530,834.27/128,014.62
  6. Step 6: Final answer
    x = 140,886.49

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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.