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Finding the Fourth Proportional to 11,803.88, 17,705.80 and 3,038.72

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Solution

The fourth proportional to 11,803.88, 17,705.80 and 3,038.72 is: 4,558.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,803.88 : 17,705.80 = 3,038.72 : x
  2. Step 2: Convert to fraction form
    11,803.88/17,705.80 = 3,038.72/x
  3. Step 3: Cross multiply
    11,803.88x = 17,705.80 × 3,038.72
  4. Step 4: Simplify right side
    11,803.88x = 53,802,968.58
  5. Step 5: Solve for x
    x = 53,802,968.58/11,803.88
  6. Step 6: Final answer
    x = 4,558.07

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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.