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Finding the Fourth Proportional to 18,368.63, 25,348.71 and 10,916.63

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Solution

The fourth proportional to 18,368.63, 25,348.71 and 10,916.63 is: 15,064.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,368.63 : 25,348.71 = 10,916.63 : x
  2. Step 2: Convert to fraction form
    18,368.63/25,348.71 = 10,916.63/x
  3. Step 3: Cross multiply
    18,368.63x = 25,348.71 × 10,916.63
  4. Step 4: Simplify right side
    18,368.63x = 276,722,361.30
  5. Step 5: Solve for x
    x = 276,722,361.30/18,368.63
  6. Step 6: Final answer
    x = 15,064.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.