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Finding the Fourth Proportional to 13,646.99, 18,833.09 and 8,931.24

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Solution

The fourth proportional to 13,646.99, 18,833.09 and 8,931.24 is: 12,325.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,646.99 : 18,833.09 = 8,931.24 : x
  2. Step 2: Convert to fraction form
    13,646.99/18,833.09 = 8,931.24/x
  3. Step 3: Cross multiply
    13,646.99x = 18,833.09 × 8,931.24
  4. Step 4: Simplify right side
    13,646.99x = 168,202,802.08
  5. Step 5: Solve for x
    x = 168,202,802.08/13,646.99
  6. Step 6: Final answer
    x = 12,325.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.