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Finding the Fourth Proportional to 4,913.55, 7,339.05 and 4,222.23

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Solution

The fourth proportional to 4,913.55, 7,339.05 and 4,222.23 is: 6,306.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,913.55 : 7,339.05 = 4,222.23 : x
  2. Step 2: Convert to fraction form
    4,913.55/7,339.05 = 4,222.23/x
  3. Step 3: Cross multiply
    4,913.55x = 7,339.05 × 4,222.23
  4. Step 4: Simplify right side
    4,913.55x = 30,987,157.08
  5. Step 5: Solve for x
    x = 30,987,157.08/4,913.55
  6. Step 6: Final answer
    x = 6,306.47

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.