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Finding the Fourth Proportional to 3,590.54, 5,386.10 and 993.46

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Solution

The fourth proportional to 3,590.54, 5,386.10 and 993.46 is: 1,490.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,590.54 : 5,386.10 = 993.46 : x
  2. Step 2: Convert to fraction form
    3,590.54/5,386.10 = 993.46/x
  3. Step 3: Cross multiply
    3,590.54x = 5,386.10 × 993.46
  4. Step 4: Simplify right side
    3,590.54x = 5,350,874.91
  5. Step 5: Solve for x
    x = 5,350,874.91/3,590.54
  6. Step 6: Final answer
    x = 1,490.27

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1.5x scale

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.