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Finding the Fourth Proportional to 9,684.10, 13,586.90 and 9,684.10

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Solution

The fourth proportional to 9,684.10, 13,586.90 and 9,684.10 is: 13,586.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,684.10 : 13,586.90 = 9,684.10 : x
  2. Step 2: Convert to fraction form
    9,684.10/13,586.90 = 9,684.10/x
  3. Step 3: Cross multiply
    9,684.10x = 13,586.90 × 9,684.10
  4. Step 4: Simplify right side
    9,684.10x = 131,576,898.29
  5. Step 5: Solve for x
    x = 131,576,898.29/9,684.10
  6. Step 6: Final answer
    x = 13,586.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.