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Finding the Fourth Proportional to 11,173.64, 15,419.76 and 6,393.52

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Solution

The fourth proportional to 11,173.64, 15,419.76 and 6,393.52 is: 8,823.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,173.64 : 15,419.76 = 6,393.52 : x
  2. Step 2: Convert to fraction form
    11,173.64/15,419.76 = 6,393.52/x
  3. Step 3: Cross multiply
    11,173.64x = 15,419.76 × 6,393.52
  4. Step 4: Simplify right side
    11,173.64x = 98,586,543.96
  5. Step 5: Solve for x
    x = 98,586,543.96/11,173.64
  6. Step 6: Final answer
    x = 8,823.14

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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.