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Finding the Fourth Proportional to 9,868.06, 13,617.93 and 5,391.88

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Solution

The fourth proportional to 9,868.06, 13,617.93 and 5,391.88 is: 7,440.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,868.06 : 13,617.93 = 5,391.88 : x
  2. Step 2: Convert to fraction form
    9,868.06/13,617.93 = 5,391.88/x
  3. Step 3: Cross multiply
    9,868.06x = 13,617.93 × 5,391.88
  4. Step 4: Simplify right side
    9,868.06x = 73,426,244.41
  5. Step 5: Solve for x
    x = 73,426,244.41/9,868.06
  6. Step 6: Final answer
    x = 7,440.80

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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.