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Finding the Fourth Proportional to 18,916.88, 26,106.10 and 10,533.38

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Solution

The fourth proportional to 18,916.88, 26,106.10 and 10,533.38 is: 14,536.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,916.88 : 26,106.10 = 10,533.38 : x
  2. Step 2: Convert to fraction form
    18,916.88/26,106.10 = 10,533.38/x
  3. Step 3: Cross multiply
    18,916.88x = 26,106.10 × 10,533.38
  4. Step 4: Simplify right side
    18,916.88x = 274,985,314.75
  5. Step 5: Solve for x
    x = 274,985,314.75/18,916.88
  6. Step 6: Final answer
    x = 14,536.51

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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.