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Finding the Fourth Proportional to 1,916.08, 2,874.78 and 876.52

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Solution

The fourth proportional to 1,916.08, 2,874.78 and 876.52 is: 1,315.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.08 : 2,874.78 = 876.52 : x
  2. Step 2: Convert to fraction form
    1,916.08/2,874.78 = 876.52/x
  3. Step 3: Cross multiply
    1,916.08x = 2,874.78 × 876.52
  4. Step 4: Simplify right side
    1,916.08x = 2,519,802.17
  5. Step 5: Solve for x
    x = 2,519,802.17/1,916.08
  6. Step 6: Final answer
    x = 1,315.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.