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Finding the Fourth Proportional to 9,203.01, 12,700.46 and 5,170.55

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Solution

The fourth proportional to 9,203.01, 12,700.46 and 5,170.55 is: 7,135.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,203.01 : 12,700.46 = 5,170.55 : x
  2. Step 2: Convert to fraction form
    9,203.01/12,700.46 = 5,170.55/x
  3. Step 3: Cross multiply
    9,203.01x = 12,700.46 × 5,170.55
  4. Step 4: Simplify right side
    9,203.01x = 65,668,363.45
  5. Step 5: Solve for x
    x = 65,668,363.45/9,203.01
  6. Step 6: Final answer
    x = 7,135.53

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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.