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Finding the Fourth Proportional to 11,906.03, 16,430.87 and 6,870.16

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Solution

The fourth proportional to 11,906.03, 16,430.87 and 6,870.16 is: 9,481.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,906.03 : 16,430.87 = 6,870.16 : x
  2. Step 2: Convert to fraction form
    11,906.03/16,430.87 = 6,870.16/x
  3. Step 3: Cross multiply
    11,906.03x = 16,430.87 × 6,870.16
  4. Step 4: Simplify right side
    11,906.03x = 112,882,681.94
  5. Step 5: Solve for x
    x = 112,882,681.94/11,906.03
  6. Step 6: Final answer
    x = 9,481.13

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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.