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Finding the Fourth Proportional to 64,080.48, 88,420.32 and 35,786.28

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Solution

The fourth proportional to 64,080.48, 88,420.32 and 35,786.28 is: 49,379.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,080.48 : 88,420.32 = 35,786.28 : x
  2. Step 2: Convert to fraction form
    64,080.48/88,420.32 = 35,786.28/x
  3. Step 3: Cross multiply
    64,080.48x = 88,420.32 × 35,786.28
  4. Step 4: Simplify right side
    64,080.48x = 3,164,234,329.21
  5. Step 5: Solve for x
    x = 3,164,234,329.21/64,080.48
  6. Step 6: Final answer
    x = 49,379.07

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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.