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Finding the Fourth Proportional to 16,442.70, 22,690.26 and 9,368.52

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Solution

The fourth proportional to 16,442.70, 22,690.26 and 9,368.52 is: 12,928.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,442.70 : 22,690.26 = 9,368.52 : x
  2. Step 2: Convert to fraction form
    16,442.70/22,690.26 = 9,368.52/x
  3. Step 3: Cross multiply
    16,442.70x = 22,690.26 × 9,368.52
  4. Step 4: Simplify right side
    16,442.70x = 212,574,154.62
  5. Step 5: Solve for x
    x = 212,574,154.62/16,442.70
  6. Step 6: Final answer
    x = 12,928.18

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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.