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Finding the Fourth Proportional to 55,900.99, 77,142.99 and 31,706.56

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Solution

The fourth proportional to 55,900.99, 77,142.99 and 31,706.56 is: 43,754.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,900.99 : 77,142.99 = 31,706.56 : x
  2. Step 2: Convert to fraction form
    55,900.99/77,142.99 = 31,706.56/x
  3. Step 3: Cross multiply
    55,900.99x = 77,142.99 × 31,706.56
  4. Step 4: Simplify right side
    55,900.99x = 2,445,938,841.01
  5. Step 5: Solve for x
    x = 2,445,938,841.01/55,900.99
  6. Step 6: Final answer
    x = 43,754.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.