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Finding the Fourth Proportional to 13,312.42, 18,363.24 and 8,599.42

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Solution

The fourth proportional to 13,312.42, 18,363.24 and 8,599.42 is: 11,862.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.42 : 18,363.24 = 8,599.42 : x
  2. Step 2: Convert to fraction form
    13,312.42/18,363.24 = 8,599.42/x
  3. Step 3: Cross multiply
    13,312.42x = 18,363.24 × 8,599.42
  4. Step 4: Simplify right side
    13,312.42x = 157,913,213.32
  5. Step 5: Solve for x
    x = 157,913,213.32/13,312.42
  6. Step 6: Final answer
    x = 11,862.10

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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.