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Finding the Fourth Proportional to 9,280.70, 12,807.34 and 5,089.22

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Solution

The fourth proportional to 9,280.70, 12,807.34 and 5,089.22 is: 7,023.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,280.70 : 12,807.34 = 5,089.22 : x
  2. Step 2: Convert to fraction form
    9,280.70/12,807.34 = 5,089.22/x
  3. Step 3: Cross multiply
    9,280.70x = 12,807.34 × 5,089.22
  4. Step 4: Simplify right side
    9,280.70x = 65,179,370.87
  5. Step 5: Solve for x
    x = 65,179,370.87/9,280.70
  6. Step 6: Final answer
    x = 7,023.11

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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.