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Finding the Fourth Proportional to 5,392.51, 7,440.21 and 3,154.94

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Solution

The fourth proportional to 5,392.51, 7,440.21 and 3,154.94 is: 4,352.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,392.51 : 7,440.21 = 3,154.94 : x
  2. Step 2: Convert to fraction form
    5,392.51/7,440.21 = 3,154.94/x
  3. Step 3: Cross multiply
    5,392.51x = 7,440.21 × 3,154.94
  4. Step 4: Simplify right side
    5,392.51x = 23,473,378.94
  5. Step 5: Solve for x
    x = 23,473,378.94/5,392.51
  6. Step 6: Final answer
    x = 4,352.96

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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.