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Finding the Fourth Proportional to 9,362.75, 12,920.66 and 5,171.00

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Solution

The fourth proportional to 9,362.75, 12,920.66 and 5,171.00 is: 7,136.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,362.75 : 12,920.66 = 5,171.00 : x
  2. Step 2: Convert to fraction form
    9,362.75/12,920.66 = 5,171.00/x
  3. Step 3: Cross multiply
    9,362.75x = 12,920.66 × 5,171.00
  4. Step 4: Simplify right side
    9,362.75x = 66,812,642.40
  5. Step 5: Solve for x
    x = 66,812,642.40/9,362.75
  6. Step 6: Final answer
    x = 7,136.01

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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.