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Finding the Fourth Proportional to 1,123.12, 1,549.98 and 651.17

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Solution

The fourth proportional to 1,123.12, 1,549.98 and 651.17 is: 898.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123.12 : 1,549.98 = 651.17 : x
  2. Step 2: Convert to fraction form
    1,123.12/1,549.98 = 651.17/x
  3. Step 3: Cross multiply
    1,123.12x = 1,549.98 × 651.17
  4. Step 4: Simplify right side
    1,123.12x = 1,009,300.48
  5. Step 5: Solve for x
    x = 1,009,300.48/1,123.12
  6. Step 6: Final answer
    x = 898.66

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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.