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Finding the Fourth Proportional to 9,695.87, 13,381.11 and 5,717.76

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Solution

The fourth proportional to 9,695.87, 13,381.11 and 5,717.76 is: 7,890.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,695.87 : 13,381.11 = 5,717.76 : x
  2. Step 2: Convert to fraction form
    9,695.87/13,381.11 = 5,717.76/x
  3. Step 3: Cross multiply
    9,695.87x = 13,381.11 × 5,717.76
  4. Step 4: Simplify right side
    9,695.87x = 76,509,975.51
  5. Step 5: Solve for x
    x = 76,509,975.51/9,695.87
  6. Step 6: Final answer
    x = 7,890.98

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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.