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Finding the Fourth Proportional to 13,636.76, 20,448.59 and 4,869.59

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Solution

The fourth proportional to 13,636.76, 20,448.59 and 4,869.59 is: 7,302.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,636.76 : 20,448.59 = 4,869.59 : x
  2. Step 2: Convert to fraction form
    13,636.76/20,448.59 = 4,869.59/x
  3. Step 3: Cross multiply
    13,636.76x = 20,448.59 × 4,869.59
  4. Step 4: Simplify right side
    13,636.76x = 99,576,122.79
  5. Step 5: Solve for x
    x = 99,576,122.79/13,636.76
  6. Step 6: Final answer
    x = 7,302.04

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1.5x scale

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.