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Finding the Fourth Proportional to 13,819.76, 19,066.20 and 8,854.64

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Solution

The fourth proportional to 13,819.76, 19,066.20 and 8,854.64 is: 12,216.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.76 : 19,066.20 = 8,854.64 : x
  2. Step 2: Convert to fraction form
    13,819.76/19,066.20 = 8,854.64/x
  3. Step 3: Cross multiply
    13,819.76x = 19,066.20 × 8,854.64
  4. Step 4: Simplify right side
    13,819.76x = 168,824,337.17
  5. Step 5: Solve for x
    x = 168,824,337.17/13,819.76
  6. Step 6: Final answer
    x = 12,216.16

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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.