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Finding the Fourth Proportional to 22,230.40, 31,174.40 and 22,230.40

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Solution

The fourth proportional to 22,230.40, 31,174.40 and 22,230.40 is: 31,174.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,230.40 : 31,174.40 = 22,230.40 : x
  2. Step 2: Convert to fraction form
    22,230.40/31,174.40 = 22,230.40/x
  3. Step 3: Cross multiply
    22,230.40x = 31,174.40 × 22,230.40
  4. Step 4: Simplify right side
    22,230.40x = 693,019,381.76
  5. Step 5: Solve for x
    x = 693,019,381.76/22,230.40
  6. Step 6: Final answer
    x = 31,174.40

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Half scale
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Double scale
Find fourth proportional to 22,231.40, 31,175.80 and 22,231.40
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.