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Finding the Fourth Proportional to 13,225.30, 18,250.36 and 7,917.01

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Solution

The fourth proportional to 13,225.30, 18,250.36 and 7,917.01 is: 10,925.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,225.30 : 18,250.36 = 7,917.01 : x
  2. Step 2: Convert to fraction form
    13,225.30/18,250.36 = 7,917.01/x
  3. Step 3: Cross multiply
    13,225.30x = 18,250.36 × 7,917.01
  4. Step 4: Simplify right side
    13,225.30x = 144,488,282.62
  5. Step 5: Solve for x
    x = 144,488,282.62/13,225.30
  6. Step 6: Final answer
    x = 10,925.14

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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.