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Finding the Fourth Proportional to 1,844.13, 2,762.49 and 916.89

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Solution

The fourth proportional to 1,844.13, 2,762.49 and 916.89 is: 1,373.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,844.13 : 2,762.49 = 916.89 : x
  2. Step 2: Convert to fraction form
    1,844.13/2,762.49 = 916.89/x
  3. Step 3: Cross multiply
    1,844.13x = 2,762.49 × 916.89
  4. Step 4: Simplify right side
    1,844.13x = 2,532,899.46
  5. Step 5: Solve for x
    x = 2,532,899.46/1,844.13
  6. Step 6: Final answer
    x = 1,373.49

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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.