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Finding the Fourth Proportional to 1,265.04, 1,897.24 and 484.74

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Solution

The fourth proportional to 1,265.04, 1,897.24 and 484.74 is: 726.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.04 : 1,897.24 = 484.74 : x
  2. Step 2: Convert to fraction form
    1,265.04/1,897.24 = 484.74/x
  3. Step 3: Cross multiply
    1,265.04x = 1,897.24 × 484.74
  4. Step 4: Simplify right side
    1,265.04x = 919,668.12
  5. Step 5: Solve for x
    x = 919,668.12/1,265.04
  6. Step 6: Final answer
    x = 726.99

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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.