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Finding the Fourth Proportional to 925.64, 1,277.38 and 511.64

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Solution

The fourth proportional to 925.64, 1,277.38 and 511.64 is: 706.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.64 : 1,277.38 = 511.64 : x
  2. Step 2: Convert to fraction form
    925.64/1,277.38 = 511.64/x
  3. Step 3: Cross multiply
    925.64x = 1,277.38 × 511.64
  4. Step 4: Simplify right side
    925.64x = 653,551.04
  5. Step 5: Solve for x
    x = 653,551.04/925.64
  6. Step 6: Final answer
    x = 706.06

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Double scale
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1.5x scale

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.