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Finding the Fourth Proportional to 9,201.90, 12,853.50 and 9,201.90

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Solution

The fourth proportional to 9,201.90, 12,853.50 and 9,201.90 is: 12,853.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,201.90 : 12,853.50 = 9,201.90 : x
  2. Step 2: Convert to fraction form
    9,201.90/12,853.50 = 9,201.90/x
  3. Step 3: Cross multiply
    9,201.90x = 12,853.50 × 9,201.90
  4. Step 4: Simplify right side
    9,201.90x = 118,276,621.65
  5. Step 5: Solve for x
    x = 118,276,621.65/9,201.90
  6. Step 6: Final answer
    x = 12,853.50

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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.