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Finding the Fourth Proportional to 30,609.92, 42,202.88 and 23,448.32

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Solution

The fourth proportional to 30,609.92, 42,202.88 and 23,448.32 is: 32,328.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,609.92 : 42,202.88 = 23,448.32 : x
  2. Step 2: Convert to fraction form
    30,609.92/42,202.88 = 23,448.32/x
  3. Step 3: Cross multiply
    30,609.92x = 42,202.88 × 23,448.32
  4. Step 4: Simplify right side
    30,609.92x = 989,586,635.16
  5. Step 5: Solve for x
    x = 989,586,635.16/30,609.92
  6. Step 6: Final answer
    x = 32,328.95

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.