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Finding the Fourth Proportional to 60,887.80, 91,330.42 and 28,055.80

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Solution

The fourth proportional to 60,887.80, 91,330.42 and 28,055.80 is: 42,083.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,887.80 : 91,330.42 = 28,055.80 : x
  2. Step 2: Convert to fraction form
    60,887.80/91,330.42 = 28,055.80/x
  3. Step 3: Cross multiply
    60,887.80x = 91,330.42 × 28,055.80
  4. Step 4: Simplify right side
    60,887.80x = 2,562,347,997.44
  5. Step 5: Solve for x
    x = 2,562,347,997.44/60,887.80
  6. Step 6: Final answer
    x = 42,083.11

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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.