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Finding the Fourth Proportional to 38,221,965.90, 53,661,917.70 and 38,221,965.90

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Solution

The fourth proportional to 38,221,965.90, 53,661,917.70 and 38,221,965.90 is: 53,661,917.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,221,965.90 : 53,661,917.70 = 38,221,965.90 : x
  2. Step 2: Convert to fraction form
    38,221,965.90/53,661,917.70 = 38,221,965.90/x
  3. Step 3: Cross multiply
    38,221,965.90x = 53,661,917.70 × 38,221,965.90
  4. Step 4: Simplify right side
    38,221,965.90x = 2,051,063,988,458,006.50
  5. Step 5: Solve for x
    x = 2,051,063,988,458,006.50/38,221,965.90
  6. Step 6: Final answer
    x = 53,661,917.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.