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Finding the Fourth Proportional to 15,565.86, 21,480.96 and 8,492.34

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Solution

The fourth proportional to 15,565.86, 21,480.96 and 8,492.34 is: 11,719.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,565.86 : 21,480.96 = 8,492.34 : x
  2. Step 2: Convert to fraction form
    15,565.86/21,480.96 = 8,492.34/x
  3. Step 3: Cross multiply
    15,565.86x = 21,480.96 × 8,492.34
  4. Step 4: Simplify right side
    15,565.86x = 182,423,615.85
  5. Step 5: Solve for x
    x = 182,423,615.85/15,565.86
  6. Step 6: Final answer
    x = 11,719.47

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.