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Finding the Fourth Proportional to 43,731.64, 65,597.76 and 18,750.63

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Solution

The fourth proportional to 43,731.64, 65,597.76 and 18,750.63 is: 28,126.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,731.64 : 65,597.76 = 18,750.63 : x
  2. Step 2: Convert to fraction form
    43,731.64/65,597.76 = 18,750.63/x
  3. Step 3: Cross multiply
    43,731.64x = 65,597.76 × 18,750.63
  4. Step 4: Simplify right side
    43,731.64x = 1,229,999,344.17
  5. Step 5: Solve for x
    x = 1,229,999,344.17/43,731.64
  6. Step 6: Final answer
    x = 28,126.08

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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.