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Finding the Fourth Proportional to 69,707.64, 96,196.38 and 39,492.90

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Solution

The fourth proportional to 69,707.64, 96,196.38 and 39,492.90 is: 54,500.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,707.64 : 96,196.38 = 39,492.90 : x
  2. Step 2: Convert to fraction form
    69,707.64/96,196.38 = 39,492.90/x
  3. Step 3: Cross multiply
    69,707.64x = 96,196.38 × 39,492.90
  4. Step 4: Simplify right side
    69,707.64x = 3,799,074,015.70
  5. Step 5: Solve for x
    x = 3,799,074,015.70/69,707.64
  6. Step 6: Final answer
    x = 54,500.11

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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.