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Finding the Fourth Proportional to 11,813.80, 16,303.08 and 6,508.48

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Solution

The fourth proportional to 11,813.80, 16,303.08 and 6,508.48 is: 8,981.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,813.80 : 16,303.08 = 6,508.48 : x
  2. Step 2: Convert to fraction form
    11,813.80/16,303.08 = 6,508.48/x
  3. Step 3: Cross multiply
    11,813.80x = 16,303.08 × 6,508.48
  4. Step 4: Simplify right side
    11,813.80x = 106,108,270.12
  5. Step 5: Solve for x
    x = 106,108,270.12/11,813.80
  6. Step 6: Final answer
    x = 8,981.72

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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.