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Finding the Fourth Proportional to 13,368.74, 20,059.95 and 5,477

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Solution

The fourth proportional to 13,368.74, 20,059.95 and 5,477 is: 8,218.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.74 : 20,059.95 = 5,477 : x
  2. Step 2: Convert to fraction form
    13,368.74/20,059.95 = 5,477/x
  3. Step 3: Cross multiply
    13,368.74x = 20,059.95 × 5,477
  4. Step 4: Simplify right side
    13,368.74x = 109,868,346.15
  5. Step 5: Solve for x
    x = 109,868,346.15/13,368.74
  6. Step 6: Final answer
    x = 8,218.30

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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.