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Finding the Fourth Proportional to 2,223.90, 3,116.70 and 2,223.90

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Solution

The fourth proportional to 2,223.90, 3,116.70 and 2,223.90 is: 3,116.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.90 : 3,116.70 = 2,223.90 : x
  2. Step 2: Convert to fraction form
    2,223.90/3,116.70 = 2,223.90/x
  3. Step 3: Cross multiply
    2,223.90x = 3,116.70 × 2,223.90
  4. Step 4: Simplify right side
    2,223.90x = 6,931,229.13
  5. Step 5: Solve for x
    x = 6,931,229.13/2,223.90
  6. Step 6: Final answer
    x = 3,116.70

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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.