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Finding the Fourth Proportional to 9,235.79, 13,859.76 and 3,392.45

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Solution

The fourth proportional to 9,235.79, 13,859.76 and 3,392.45 is: 5,090.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,235.79 : 13,859.76 = 3,392.45 : x
  2. Step 2: Convert to fraction form
    9,235.79/13,859.76 = 3,392.45/x
  3. Step 3: Cross multiply
    9,235.79x = 13,859.76 × 3,392.45
  4. Step 4: Simplify right side
    9,235.79x = 47,018,473.51
  5. Step 5: Solve for x
    x = 47,018,473.51/9,235.79
  6. Step 6: Final answer
    x = 5,090.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.