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Finding the Fourth Proportional to 62,611.76, 93,917.81 and 18,239.60

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Solution

The fourth proportional to 62,611.76, 93,917.81 and 18,239.60 is: 27,359.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,611.76 : 93,917.81 = 18,239.60 : x
  2. Step 2: Convert to fraction form
    62,611.76/93,917.81 = 18,239.60/x
  3. Step 3: Cross multiply
    62,611.76x = 93,917.81 × 18,239.60
  4. Step 4: Simplify right side
    62,611.76x = 1,713,023,567.67
  5. Step 5: Solve for x
    x = 1,713,023,567.67/62,611.76
  6. Step 6: Final answer
    x = 27,359.45

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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.