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Finding the Fourth Proportional to 7,955.85, 10,980.27 and 5,725.11

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Solution

The fourth proportional to 7,955.85, 10,980.27 and 5,725.11 is: 7,901.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.85 : 10,980.27 = 5,725.11 : x
  2. Step 2: Convert to fraction form
    7,955.85/10,980.27 = 5,725.11/x
  3. Step 3: Cross multiply
    7,955.85x = 10,980.27 × 5,725.11
  4. Step 4: Simplify right side
    7,955.85x = 62,863,253.58
  5. Step 5: Solve for x
    x = 62,863,253.58/7,955.85
  6. Step 6: Final answer
    x = 7,901.51

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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.