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Finding the Fourth Proportional to 56,990.88, 85,097.16 and 51,029.28

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Solution

The fourth proportional to 56,990.88, 85,097.16 and 51,029.28 is: 76,195.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,990.88 : 85,097.16 = 51,029.28 : x
  2. Step 2: Convert to fraction form
    56,990.88/85,097.16 = 51,029.28/x
  3. Step 3: Cross multiply
    56,990.88x = 85,097.16 × 51,029.28
  4. Step 4: Simplify right side
    56,990.88x = 4,342,446,804.84
  5. Step 5: Solve for x
    x = 4,342,446,804.84/56,990.88
  6. Step 6: Final answer
    x = 76,195.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.