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Finding the Fourth Proportional to 5,307.08, 7,921.70 and 4,684.38

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Solution

The fourth proportional to 5,307.08, 7,921.70 and 4,684.38 is: 6,992.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,307.08 : 7,921.70 = 4,684.38 : x
  2. Step 2: Convert to fraction form
    5,307.08/7,921.70 = 4,684.38/x
  3. Step 3: Cross multiply
    5,307.08x = 7,921.70 × 4,684.38
  4. Step 4: Simplify right side
    5,307.08x = 37,108,253.05
  5. Step 5: Solve for x
    x = 37,108,253.05/5,307.08
  6. Step 6: Final answer
    x = 6,992.22

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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.