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Finding the Fourth Proportional to 9,235.86, 12,742.33 and 5,255.98

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Solution

The fourth proportional to 9,235.86, 12,742.33 and 5,255.98 is: 7,251.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,235.86 : 12,742.33 = 5,255.98 : x
  2. Step 2: Convert to fraction form
    9,235.86/12,742.33 = 5,255.98/x
  3. Step 3: Cross multiply
    9,235.86x = 12,742.33 × 5,255.98
  4. Step 4: Simplify right side
    9,235.86x = 66,973,341.64
  5. Step 5: Solve for x
    x = 66,973,341.64/9,235.86
  6. Step 6: Final answer
    x = 7,251.45

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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.