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Finding the Fourth Proportional to 64,412.80, 96,619.20 and 44,729.80

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Solution

The fourth proportional to 64,412.80, 96,619.20 and 44,729.80 is: 67,094.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,412.80 : 96,619.20 = 44,729.80 : x
  2. Step 2: Convert to fraction form
    64,412.80/96,619.20 = 44,729.80/x
  3. Step 3: Cross multiply
    64,412.80x = 96,619.20 × 44,729.80
  4. Step 4: Simplify right side
    64,412.80x = 4,321,757,492.16
  5. Step 5: Solve for x
    x = 4,321,757,492.16/64,412.80
  6. Step 6: Final answer
    x = 67,094.70

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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.