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Finding the Fourth Proportional to 20,703.19, 31,055.29 and 7,555.55

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Solution

The fourth proportional to 20,703.19, 31,055.29 and 7,555.55 is: 11,333.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.19 : 31,055.29 = 7,555.55 : x
  2. Step 2: Convert to fraction form
    20,703.19/31,055.29 = 7,555.55/x
  3. Step 3: Cross multiply
    20,703.19x = 31,055.29 × 7,555.55
  4. Step 4: Simplify right side
    20,703.19x = 234,639,796.36
  5. Step 5: Solve for x
    x = 234,639,796.36/20,703.19
  6. Step 6: Final answer
    x = 11,333.51

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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.