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Finding the Fourth Proportional to 60,848.60, 91,256.70 and 18,728.60

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Solution

The fourth proportional to 60,848.60, 91,256.70 and 18,728.60 is: 28,087.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,848.60 : 91,256.70 = 18,728.60 : x
  2. Step 2: Convert to fraction form
    60,848.60/91,256.70 = 18,728.60/x
  3. Step 3: Cross multiply
    60,848.60x = 91,256.70 × 18,728.60
  4. Step 4: Simplify right side
    60,848.60x = 1,709,110,231.62
  5. Step 5: Solve for x
    x = 1,709,110,231.62/60,848.60
  6. Step 6: Final answer
    x = 28,087.91

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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.