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Finding the Fourth Proportional to 5,307.79, 7,325.64 and 3,069.28

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Solution

The fourth proportional to 5,307.79, 7,325.64 and 3,069.28 is: 4,236.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,307.79 : 7,325.64 = 3,069.28 : x
  2. Step 2: Convert to fraction form
    5,307.79/7,325.64 = 3,069.28/x
  3. Step 3: Cross multiply
    5,307.79x = 7,325.64 × 3,069.28
  4. Step 4: Simplify right side
    5,307.79x = 22,484,440.34
  5. Step 5: Solve for x
    x = 22,484,440.34/5,307.79
  6. Step 6: Final answer
    x = 4,236.12

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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.