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Finding the Fourth Proportional to 37,808.88, 56,721.80 and 11,515.70

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Solution

The fourth proportional to 37,808.88, 56,721.80 and 11,515.70 is: 17,276.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,808.88 : 56,721.80 = 11,515.70 : x
  2. Step 2: Convert to fraction form
    37,808.88/56,721.80 = 11,515.70/x
  3. Step 3: Cross multiply
    37,808.88x = 56,721.80 × 11,515.70
  4. Step 4: Simplify right side
    37,808.88x = 653,191,232.26
  5. Step 5: Solve for x
    x = 653,191,232.26/37,808.88
  6. Step 6: Final answer
    x = 17,276.13

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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.