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Finding the Fourth Proportional to 78,568.14, 117,866.88 and 26,014.62

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Solution

The fourth proportional to 78,568.14, 117,866.88 and 26,014.62 is: 39,026.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,568.14 : 117,866.88 = 26,014.62 : x
  2. Step 2: Convert to fraction form
    78,568.14/117,866.88 = 26,014.62/x
  3. Step 3: Cross multiply
    78,568.14x = 117,866.88 × 26,014.62
  4. Step 4: Simplify right side
    78,568.14x = 3,066,262,093.79
  5. Step 5: Solve for x
    x = 3,066,262,093.79/78,568.14
  6. Step 6: Final answer
    x = 39,026.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.