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Finding the Fourth Proportional to 1,201.86, 1,655.26 and 1,036.01

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Solution

The fourth proportional to 1,201.86, 1,655.26 and 1,036.01 is: 1,426.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201.86 : 1,655.26 = 1,036.01 : x
  2. Step 2: Convert to fraction form
    1,201.86/1,655.26 = 1,036.01/x
  3. Step 3: Cross multiply
    1,201.86x = 1,655.26 × 1,036.01
  4. Step 4: Simplify right side
    1,201.86x = 1,714,867.46
  5. Step 5: Solve for x
    x = 1,714,867.46/1,201.86
  6. Step 6: Final answer
    x = 1,426.84

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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.