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Finding the Fourth Proportional to 1,855.51, 2,560.65 and 1,016.25

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Solution

The fourth proportional to 1,855.51, 2,560.65 and 1,016.25 is: 1,402.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.51 : 2,560.65 = 1,016.25 : x
  2. Step 2: Convert to fraction form
    1,855.51/2,560.65 = 1,016.25/x
  3. Step 3: Cross multiply
    1,855.51x = 2,560.65 × 1,016.25
  4. Step 4: Simplify right side
    1,855.51x = 2,602,247.15
  5. Step 5: Solve for x
    x = 2,602,247.15/1,855.51
  6. Step 6: Final answer
    x = 1,402.44

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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.