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Finding the Fourth Proportional to 9,960.40, 14,940.60 and 9,506.80

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Solution

The fourth proportional to 9,960.40, 14,940.60 and 9,506.80 is: 14,260.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,960.40 : 14,940.60 = 9,506.80 : x
  2. Step 2: Convert to fraction form
    9,960.40/14,940.60 = 9,506.80/x
  3. Step 3: Cross multiply
    9,960.40x = 14,940.60 × 9,506.80
  4. Step 4: Simplify right side
    9,960.40x = 142,037,296.08
  5. Step 5: Solve for x
    x = 142,037,296.08/9,960.40
  6. Step 6: Final answer
    x = 14,260.20

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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.