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Finding the Fourth Proportional to 61,015.86, 91,588.50 and 54,041.16

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Solution

The fourth proportional to 61,015.86, 91,588.50 and 54,041.16 is: 81,119.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,015.86 : 91,588.50 = 54,041.16 : x
  2. Step 2: Convert to fraction form
    61,015.86/91,588.50 = 54,041.16/x
  3. Step 3: Cross multiply
    61,015.86x = 91,588.50 × 54,041.16
  4. Step 4: Simplify right side
    61,015.86x = 4,949,548,782.66
  5. Step 5: Solve for x
    x = 4,949,548,782.66/61,015.86
  6. Step 6: Final answer
    x = 81,119.05

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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.