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Finding the Fourth Proportional to 63,987,653.80, 95,981,480.70 and 28,085,861.80

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Solution

The fourth proportional to 63,987,653.80, 95,981,480.70 and 28,085,861.80 is: 42,128,792.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,987,653.80 : 95,981,480.70 = 28,085,861.80 : x
  2. Step 2: Convert to fraction form
    63,987,653.80/95,981,480.70 = 28,085,861.80/x
  3. Step 3: Cross multiply
    63,987,653.80x = 95,981,480.70 × 28,085,861.80
  4. Step 4: Simplify right side
    63,987,653.80x = 2,695,722,602,299,567.50
  5. Step 5: Solve for x
    x = 2,695,722,602,299,567.50/63,987,653.80
  6. Step 6: Final answer
    x = 42,128,792.70

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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.