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Finding the Fourth Proportional to 64,967.04, 89,629.62 and 39,464.34

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Solution

The fourth proportional to 64,967.04, 89,629.62 and 39,464.34 is: 54,445.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,967.04 : 89,629.62 = 39,464.34 : x
  2. Step 2: Convert to fraction form
    64,967.04/89,629.62 = 39,464.34/x
  3. Step 3: Cross multiply
    64,967.04x = 89,629.62 × 39,464.34
  4. Step 4: Simplify right side
    64,967.04x = 3,537,173,797.75
  5. Step 5: Solve for x
    x = 3,537,173,797.75/64,967.04
  6. Step 6: Final answer
    x = 54,445.67

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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.