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Finding the Fourth Proportional to 9,016.70, 12,440.90 and 5,237.62

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Solution

The fourth proportional to 9,016.70, 12,440.90 and 5,237.62 is: 7,226.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,016.70 : 12,440.90 = 5,237.62 : x
  2. Step 2: Convert to fraction form
    9,016.70/12,440.90 = 5,237.62/x
  3. Step 3: Cross multiply
    9,016.70x = 12,440.90 × 5,237.62
  4. Step 4: Simplify right side
    9,016.70x = 65,160,688.65
  5. Step 5: Solve for x
    x = 65,160,688.65/9,016.70
  6. Step 6: Final answer
    x = 7,226.67

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Half scale
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Double scale
Find fourth proportional to 9,017.70, 12,442.28 and 5,238.62
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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.