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Finding the Fourth Proportional to 1,892.12, 2,611.13 and 1,106.22

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Solution

The fourth proportional to 1,892.12, 2,611.13 and 1,106.22 is: 1,526.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,892.12 : 2,611.13 = 1,106.22 : x
  2. Step 2: Convert to fraction form
    1,892.12/2,611.13 = 1,106.22/x
  3. Step 3: Cross multiply
    1,892.12x = 2,611.13 × 1,106.22
  4. Step 4: Simplify right side
    1,892.12x = 2,888,484.23
  5. Step 5: Solve for x
    x = 2,888,484.23/1,892.12
  6. Step 6: Final answer
    x = 1,526.59

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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.