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Finding the Fourth Proportional to 11,068.30, 15,258.21 and 7,919.02

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Solution

The fourth proportional to 11,068.30, 15,258.21 and 7,919.02 is: 10,916.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,068.30 : 15,258.21 = 7,919.02 : x
  2. Step 2: Convert to fraction form
    11,068.30/15,258.21 = 7,919.02/x
  3. Step 3: Cross multiply
    11,068.30x = 15,258.21 × 7,919.02
  4. Step 4: Simplify right side
    11,068.30x = 120,830,070.15
  5. Step 5: Solve for x
    x = 120,830,070.15/11,068.30
  6. Step 6: Final answer
    x = 10,916.77

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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.