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Finding the Fourth Proportional to 1,926.19, 2,890.93 and 757.01

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Solution

The fourth proportional to 1,926.19, 2,890.93 and 757.01 is: 1,136.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926.19 : 2,890.93 = 757.01 : x
  2. Step 2: Convert to fraction form
    1,926.19/2,890.93 = 757.01/x
  3. Step 3: Cross multiply
    1,926.19x = 2,890.93 × 757.01
  4. Step 4: Simplify right side
    1,926.19x = 2,188,459.13
  5. Step 5: Solve for x
    x = 2,188,459.13/1,926.19
  6. Step 6: Final answer
    x = 1,136.16

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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.