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Finding the Fourth Proportional to 55,274,696.94, 82,922,672.64 and 21,193,384.98

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Solution

The fourth proportional to 55,274,696.94, 82,922,672.64 and 21,193,384.98 is: 31,794,152.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,274,696.94 : 82,922,672.64 = 21,193,384.98 : x
  2. Step 2: Convert to fraction form
    55,274,696.94/82,922,672.64 = 21,193,384.98/x
  3. Step 3: Cross multiply
    55,274,696.94x = 82,922,672.64 × 21,193,384.98
  4. Step 4: Simplify right side
    55,274,696.94x = 1,757,412,124,830,033
  5. Step 5: Solve for x
    x = 1,757,412,124,830,033/55,274,696.94
  6. Step 6: Final answer
    x = 31,794,152.15

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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.