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Finding the Fourth Proportional to 19,349.76, 26,703.12 and 13,694.64

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Solution

The fourth proportional to 19,349.76, 26,703.12 and 13,694.64 is: 18,898.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,349.76 : 26,703.12 = 13,694.64 : x
  2. Step 2: Convert to fraction form
    19,349.76/26,703.12 = 13,694.64/x
  3. Step 3: Cross multiply
    19,349.76x = 26,703.12 × 13,694.64
  4. Step 4: Simplify right side
    19,349.76x = 365,689,615.28
  5. Step 5: Solve for x
    x = 365,689,615.28/19,349.76
  6. Step 6: Final answer
    x = 18,898.92

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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.