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Finding the Fourth Proportional to 28,173.81, 38,881.08 and 15,598.56

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Solution

The fourth proportional to 28,173.81, 38,881.08 and 15,598.56 is: 21,526.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,173.81 : 38,881.08 = 15,598.56 : x
  2. Step 2: Convert to fraction form
    28,173.81/38,881.08 = 15,598.56/x
  3. Step 3: Cross multiply
    28,173.81x = 38,881.08 × 15,598.56
  4. Step 4: Simplify right side
    28,173.81x = 606,488,859.24
  5. Step 5: Solve for x
    x = 606,488,859.24/28,173.81
  6. Step 6: Final answer
    x = 21,526.69

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