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Finding the Fourth Proportional to 128,885,182.88, 193,345,895.60 and 41,417,375.68

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Solution

The fourth proportional to 128,885,182.88, 193,345,895.60 and 41,417,375.68 is: 62,131,886.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,885,182.88 : 193,345,895.60 = 41,417,375.68 : x
  2. Step 2: Convert to fraction form
    128,885,182.88/193,345,895.60 = 41,417,375.68/x
  3. Step 3: Cross multiply
    128,885,182.88x = 193,345,895.60 × 41,417,375.68
  4. Step 4: Simplify right side
    128,885,182.88x = 8,007,879,594,251,259
  5. Step 5: Solve for x
    x = 8,007,879,594,251,259/128,885,182.88
  6. Step 6: Final answer
    x = 62,131,886.81

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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.