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Finding the Fourth Proportional to 3,075, 4,613.25 and 1,023

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Solution

The fourth proportional to 3,075, 4,613.25 and 1,023 is: 1,534.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,075 : 4,613.25 = 1,023 : x
  2. Step 2: Convert to fraction form
    3,075/4,613.25 = 1,023/x
  3. Step 3: Cross multiply
    3,075x = 4,613.25 × 1,023
  4. Step 4: Simplify right side
    3,075x = 4,719,354.75
  5. Step 5: Solve for x
    x = 4,719,354.75/3,075
  6. Step 6: Final answer
    x = 1,534.75

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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.