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Finding the Fourth Proportional to 1,123.83, 1,550.92 and 651.81

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Solution

The fourth proportional to 1,123.83, 1,550.92 and 651.81 is: 899.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123.83 : 1,550.92 = 651.81 : x
  2. Step 2: Convert to fraction form
    1,123.83/1,550.92 = 651.81/x
  3. Step 3: Cross multiply
    1,123.83x = 1,550.92 × 651.81
  4. Step 4: Simplify right side
    1,123.83x = 1,010,905.17
  5. Step 5: Solve for x
    x = 1,010,905.17/1,123.83
  6. Step 6: Final answer
    x = 899.52

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.