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Finding the Fourth Proportional to 128,352,743.90, 192,529,115.85 and 128,352,743.90

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Solution

The fourth proportional to 128,352,743.90, 192,529,115.85 and 128,352,743.90 is: 192,529,115.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,352,743.90 : 192,529,115.85 = 128,352,743.90 : x
  2. Step 2: Convert to fraction form
    128,352,743.90/192,529,115.85 = 128,352,743.90/x
  3. Step 3: Cross multiply
    128,352,743.90x = 192,529,115.85 × 128,352,743.90
  4. Step 4: Simplify right side
    128,352,743.90x = 24,711,640,299,988,480
  5. Step 5: Solve for x
    x = 24,711,640,299,988,480/128,352,743.90
  6. Step 6: Final answer
    x = 192,529,115.85

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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.