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Finding the Fourth Proportional to 64,725.85, 97,094.04 and 17,978.72

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Solution

The fourth proportional to 64,725.85, 97,094.04 and 17,978.72 is: 26,969.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,725.85 : 97,094.04 = 17,978.72 : x
  2. Step 2: Convert to fraction form
    64,725.85/97,094.04 = 17,978.72/x
  3. Step 3: Cross multiply
    64,725.85x = 97,094.04 × 17,978.72
  4. Step 4: Simplify right side
    64,725.85x = 1,745,626,468.94
  5. Step 5: Solve for x
    x = 1,745,626,468.94/64,725.85
  6. Step 6: Final answer
    x = 26,969.54

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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.