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Finding the Fourth Proportional to 1,357.30, 1,886.01 and 1,351.83

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Solution

The fourth proportional to 1,357.30, 1,886.01 and 1,351.83 is: 1,878.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357.30 : 1,886.01 = 1,351.83 : x
  2. Step 2: Convert to fraction form
    1,357.30/1,886.01 = 1,351.83/x
  3. Step 3: Cross multiply
    1,357.30x = 1,886.01 × 1,351.83
  4. Step 4: Simplify right side
    1,357.30x = 2,549,564.90
  5. Step 5: Solve for x
    x = 2,549,564.90/1,357.30
  6. Step 6: Final answer
    x = 1,878.41

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.