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Finding the Fourth Proportional to 12,368.40, 17,049 and 9,372.24

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Solution

The fourth proportional to 12,368.40, 17,049 and 9,372.24 is: 12,919.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,368.40 : 17,049 = 9,372.24 : x
  2. Step 2: Convert to fraction form
    12,368.40/17,049 = 9,372.24/x
  3. Step 3: Cross multiply
    12,368.40x = 17,049 × 9,372.24
  4. Step 4: Simplify right side
    12,368.40x = 159,787,319.76
  5. Step 5: Solve for x
    x = 159,787,319.76/12,368.40
  6. Step 6: Final answer
    x = 12,919.00

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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.