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Finding the Fourth Proportional to 159,486.64, 239,051.16 and 64,694.80

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Solution

The fourth proportional to 159,486.64, 239,051.16 and 64,694.80 is: 96,969.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,486.64 : 239,051.16 = 64,694.80 : x
  2. Step 2: Convert to fraction form
    159,486.64/239,051.16 = 64,694.80/x
  3. Step 3: Cross multiply
    159,486.64x = 239,051.16 × 64,694.80
  4. Step 4: Simplify right side
    159,486.64x = 15,465,366,985.97
  5. Step 5: Solve for x
    x = 15,465,366,985.97/159,486.64
  6. Step 6: Final answer
    x = 96,969.67

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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.