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Finding the Fourth Proportional to 64,978.10, 97,467.15 and 33,809.30

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Solution

The fourth proportional to 64,978.10, 97,467.15 and 33,809.30 is: 50,713.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,978.10 : 97,467.15 = 33,809.30 : x
  2. Step 2: Convert to fraction form
    64,978.10/97,467.15 = 33,809.30/x
  3. Step 3: Cross multiply
    64,978.10x = 97,467.15 × 33,809.30
  4. Step 4: Simplify right side
    64,978.10x = 3,295,296,114.50
  5. Step 5: Solve for x
    x = 3,295,296,114.50/64,978.10
  6. Step 6: Final answer
    x = 50,713.95

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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.