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Finding the Fourth Proportional to 12,258.95, 18,384.98 and 3,491.51

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Solution

The fourth proportional to 12,258.95, 18,384.98 and 3,491.51 is: 5,236.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,258.95 : 18,384.98 = 3,491.51 : x
  2. Step 2: Convert to fraction form
    12,258.95/18,384.98 = 3,491.51/x
  3. Step 3: Cross multiply
    12,258.95x = 18,384.98 × 3,491.51
  4. Step 4: Simplify right side
    12,258.95x = 64,191,232.14
  5. Step 5: Solve for x
    x = 64,191,232.14/12,258.95
  6. Step 6: Final answer
    x = 5,236.28

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.