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Finding the Fourth Proportional to 69,368.09, 95,728.28 and 39,154.68

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Solution

The fourth proportional to 69,368.09, 95,728.28 and 39,154.68 is: 54,033.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,368.09 : 95,728.28 = 39,154.68 : x
  2. Step 2: Convert to fraction form
    69,368.09/95,728.28 = 39,154.68/x
  3. Step 3: Cross multiply
    69,368.09x = 95,728.28 × 39,154.68
  4. Step 4: Simplify right side
    69,368.09x = 3,748,209,974.58
  5. Step 5: Solve for x
    x = 3,748,209,974.58/69,368.09
  6. Step 6: Final answer
    x = 54,033.64

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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.