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Finding the Fourth Proportional to 1,895.84, 2,845.20 and 741.68

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Solution

The fourth proportional to 1,895.84, 2,845.20 and 741.68 is: 1,113.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,895.84 : 2,845.20 = 741.68 : x
  2. Step 2: Convert to fraction form
    1,895.84/2,845.20 = 741.68/x
  3. Step 3: Cross multiply
    1,895.84x = 2,845.20 × 741.68
  4. Step 4: Simplify right side
    1,895.84x = 2,110,227.94
  5. Step 5: Solve for x
    x = 2,110,227.94/1,895.84
  6. Step 6: Final answer
    x = 1,113.08

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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.