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Finding the Fourth Proportional to 9,007.81, 12,430.97 and 5,029.09

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Solution

The fourth proportional to 9,007.81, 12,430.97 and 5,029.09 is: 6,940.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,007.81 : 12,430.97 = 5,029.09 : x
  2. Step 2: Convert to fraction form
    9,007.81/12,430.97 = 5,029.09/x
  3. Step 3: Cross multiply
    9,007.81x = 12,430.97 × 5,029.09
  4. Step 4: Simplify right side
    9,007.81x = 62,516,466.92
  5. Step 5: Solve for x
    x = 62,516,466.92/9,007.81
  6. Step 6: Final answer
    x = 6,940.25

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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.