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Finding the Fourth Proportional to 615.77, 923.65 and 153.54

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Solution

The fourth proportional to 615.77, 923.65 and 153.54 is: 230.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.77 : 923.65 = 153.54 : x
  2. Step 2: Convert to fraction form
    615.77/923.65 = 153.54/x
  3. Step 3: Cross multiply
    615.77x = 923.65 × 153.54
  4. Step 4: Simplify right side
    615.77x = 141,820.49
  5. Step 5: Solve for x
    x = 141,820.49/615.77
  6. Step 6: Final answer
    x = 230.32

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.