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Finding the Fourth Proportional to 91,883.85, 137,830.49 and 25,322.51

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Solution

The fourth proportional to 91,883.85, 137,830.49 and 25,322.51 is: 37,985.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,883.85 : 137,830.49 = 25,322.51 : x
  2. Step 2: Convert to fraction form
    91,883.85/137,830.49 = 25,322.51/x
  3. Step 3: Cross multiply
    91,883.85x = 137,830.49 × 25,322.51
  4. Step 4: Simplify right side
    91,883.85x = 3,490,213,145.56
  5. Step 5: Solve for x
    x = 3,490,213,145.56/91,883.85
  6. Step 6: Final answer
    x = 37,985.06

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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.