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Finding the Fourth Proportional to 11,895.80, 17,746.80 and 10,931.48

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Solution

The fourth proportional to 11,895.80, 17,746.80 and 10,931.48 is: 16,308.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,895.80 : 17,746.80 = 10,931.48 : x
  2. Step 2: Convert to fraction form
    11,895.80/17,746.80 = 10,931.48/x
  3. Step 3: Cross multiply
    11,895.80x = 17,746.80 × 10,931.48
  4. Step 4: Simplify right side
    11,895.80x = 193,998,789.26
  5. Step 5: Solve for x
    x = 193,998,789.26/11,895.80
  6. Step 6: Final answer
    x = 16,308.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.