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Finding the Fourth Proportional to 9,916.88, 14,878.20 and 4,727.12

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Solution

The fourth proportional to 9,916.88, 14,878.20 and 4,727.12 is: 7,092.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,916.88 : 14,878.20 = 4,727.12 : x
  2. Step 2: Convert to fraction form
    9,916.88/14,878.20 = 4,727.12/x
  3. Step 3: Cross multiply
    9,916.88x = 14,878.20 × 4,727.12
  4. Step 4: Simplify right side
    9,916.88x = 70,331,036.78
  5. Step 5: Solve for x
    x = 70,331,036.78/9,916.88
  6. Step 6: Final answer
    x = 7,092.05

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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.