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Finding the Fourth Proportional to 3,699.12, 5,548.65 and 925.77

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Solution

The fourth proportional to 3,699.12, 5,548.65 and 925.77 is: 1,388.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,699.12 : 5,548.65 = 925.77 : x
  2. Step 2: Convert to fraction form
    3,699.12/5,548.65 = 925.77/x
  3. Step 3: Cross multiply
    3,699.12x = 5,548.65 × 925.77
  4. Step 4: Simplify right side
    3,699.12x = 5,136,773.71
  5. Step 5: Solve for x
    x = 5,136,773.71/3,699.12
  6. Step 6: Final answer
    x = 1,388.65

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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.