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Finding the Fourth Proportional to 8,492.37, 11,720.86 and 4,955.57

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Solution

The fourth proportional to 8,492.37, 11,720.86 and 4,955.57 is: 6,839.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,492.37 : 11,720.86 = 4,955.57 : x
  2. Step 2: Convert to fraction form
    8,492.37/11,720.86 = 4,955.57/x
  3. Step 3: Cross multiply
    8,492.37x = 11,720.86 × 4,955.57
  4. Step 4: Simplify right side
    8,492.37x = 58,083,458.81
  5. Step 5: Solve for x
    x = 58,083,458.81/8,492.37
  6. Step 6: Final answer
    x = 6,839.49

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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.