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Finding the Fourth Proportional to 1,892.55, 2,611.77 and 1,053.18

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Solution

The fourth proportional to 1,892.55, 2,611.77 and 1,053.18 is: 1,453.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,892.55 : 2,611.77 = 1,053.18 : x
  2. Step 2: Convert to fraction form
    1,892.55/2,611.77 = 1,053.18/x
  3. Step 3: Cross multiply
    1,892.55x = 2,611.77 × 1,053.18
  4. Step 4: Simplify right side
    1,892.55x = 2,750,663.93
  5. Step 5: Solve for x
    x = 2,750,663.93/1,892.55
  6. Step 6: Final answer
    x = 1,453.42

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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.