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Finding the Fourth Proportional to 13,465.92, 18,592.08 and 8,432.16

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Solution

The fourth proportional to 13,465.92, 18,592.08 and 8,432.16 is: 11,642.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,465.92 : 18,592.08 = 8,432.16 : x
  2. Step 2: Convert to fraction form
    13,465.92/18,592.08 = 8,432.16/x
  3. Step 3: Cross multiply
    13,465.92x = 18,592.08 × 8,432.16
  4. Step 4: Simplify right side
    13,465.92x = 156,771,393.29
  5. Step 5: Solve for x
    x = 156,771,393.29/13,465.92
  6. Step 6: Final answer
    x = 11,642.09

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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.