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Finding the Fourth Proportional to 60,611.58, 90,931.14 and 18,495.43

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Solution

The fourth proportional to 60,611.58, 90,931.14 and 18,495.43 is: 27,747.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,611.58 : 90,931.14 = 18,495.43 : x
  2. Step 2: Convert to fraction form
    60,611.58/90,931.14 = 18,495.43/x
  3. Step 3: Cross multiply
    60,611.58x = 90,931.14 × 18,495.43
  4. Step 4: Simplify right side
    60,611.58x = 1,681,810,307.36
  5. Step 5: Solve for x
    x = 1,681,810,307.36/60,611.58
  6. Step 6: Final answer
    x = 27,747.34

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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.