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Finding the Fourth Proportional to 1,590.92, 2,389.10 and 1,036.58

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Solution

The fourth proportional to 1,590.92, 2,389.10 and 1,036.58 is: 1,556.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.92 : 2,389.10 = 1,036.58 : x
  2. Step 2: Convert to fraction form
    1,590.92/2,389.10 = 1,036.58/x
  3. Step 3: Cross multiply
    1,590.92x = 2,389.10 × 1,036.58
  4. Step 4: Simplify right side
    1,590.92x = 2,476,476.15
  5. Step 5: Solve for x
    x = 2,476,476.15/1,590.92
  6. Step 6: Final answer
    x = 1,556.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.