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Finding the Fourth Proportional to 1,441.07, 1,988.99 and 942.89

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Solution

The fourth proportional to 1,441.07, 1,988.99 and 942.89 is: 1,301.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.07 : 1,988.99 = 942.89 : x
  2. Step 2: Convert to fraction form
    1,441.07/1,988.99 = 942.89/x
  3. Step 3: Cross multiply
    1,441.07x = 1,988.99 × 942.89
  4. Step 4: Simplify right side
    1,441.07x = 1,875,398.78
  5. Step 5: Solve for x
    x = 1,875,398.78/1,441.07
  6. Step 6: Final answer
    x = 1,301.39

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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.