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Finding the Fourth Proportional to 52,741.92, 79,119.76 and 19,485.28

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Solution

The fourth proportional to 52,741.92, 79,119.76 and 19,485.28 is: 29,230.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,741.92 : 79,119.76 = 19,485.28 : x
  2. Step 2: Convert to fraction form
    52,741.92/79,119.76 = 19,485.28/x
  3. Step 3: Cross multiply
    52,741.92x = 79,119.76 × 19,485.28
  4. Step 4: Simplify right side
    52,741.92x = 1,541,670,677.13
  5. Step 5: Solve for x
    x = 1,541,670,677.13/52,741.92
  6. Step 6: Final answer
    x = 29,230.46

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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.