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Finding the Fourth Proportional to 14,781.51, 22,181.99 and 6,986.07

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Solution

The fourth proportional to 14,781.51, 22,181.99 and 6,986.07 is: 10,483.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,781.51 : 22,181.99 = 6,986.07 : x
  2. Step 2: Convert to fraction form
    14,781.51/22,181.99 = 6,986.07/x
  3. Step 3: Cross multiply
    14,781.51x = 22,181.99 × 6,986.07
  4. Step 4: Simplify right side
    14,781.51x = 154,964,899.95
  5. Step 5: Solve for x
    x = 154,964,899.95/14,781.51
  6. Step 6: Final answer
    x = 10,483.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.