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Finding the Fourth Proportional to 1,188.86, 1,784.58 and 496.02

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Solution

The fourth proportional to 1,188.86, 1,784.58 and 496.02 is: 744.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188.86 : 1,784.58 = 496.02 : x
  2. Step 2: Convert to fraction form
    1,188.86/1,784.58 = 496.02/x
  3. Step 3: Cross multiply
    1,188.86x = 1,784.58 × 496.02
  4. Step 4: Simplify right side
    1,188.86x = 885,187.37
  5. Step 5: Solve for x
    x = 885,187.37/1,188.86
  6. Step 6: Final answer
    x = 744.57

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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.