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Finding the Fourth Proportional to 65,954.62, 98,930.31 and 19,207.90

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Solution

The fourth proportional to 65,954.62, 98,930.31 and 19,207.90 is: 28,811.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,954.62 : 98,930.31 = 19,207.90 : x
  2. Step 2: Convert to fraction form
    65,954.62/98,930.31 = 19,207.90/x
  3. Step 3: Cross multiply
    65,954.62x = 98,930.31 × 19,207.90
  4. Step 4: Simplify right side
    65,954.62x = 1,900,243,501.45
  5. Step 5: Solve for x
    x = 1,900,243,501.45/65,954.62
  6. Step 6: Final answer
    x = 28,811.38

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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.