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Finding the Fourth Proportional to 64,505.40, 96,539.40 and 56,632.20

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Solution

The fourth proportional to 64,505.40, 96,539.40 and 56,632.20 is: 84,756.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,505.40 : 96,539.40 = 56,632.20 : x
  2. Step 2: Convert to fraction form
    64,505.40/96,539.40 = 56,632.20/x
  3. Step 3: Cross multiply
    64,505.40x = 96,539.40 × 56,632.20
  4. Step 4: Simplify right side
    64,505.40x = 5,467,238,608.68
  5. Step 5: Solve for x
    x = 5,467,238,608.68/64,505.40
  6. Step 6: Final answer
    x = 84,756.29

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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.