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Finding the Fourth Proportional to 85,661,649.61, 128,492,471.18 and 25,077,375.61

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Solution

The fourth proportional to 85,661,649.61, 128,492,471.18 and 25,077,375.61 is: 37,616,062.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,661,649.61 : 128,492,471.18 = 25,077,375.61 : x
  2. Step 2: Convert to fraction form
    85,661,649.61/128,492,471.18 = 25,077,375.61/x
  3. Step 3: Cross multiply
    85,661,649.61x = 128,492,471.18 × 25,077,375.61
  4. Step 4: Simplify right side
    85,661,649.61x = 3,222,253,962,712,573
  5. Step 5: Solve for x
    x = 3,222,253,962,712,573/85,661,649.61
  6. Step 6: Final answer
    x = 37,616,062.47

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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.