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Finding the Fourth Proportional to 46,009.60, 68,971.20 and 36,008.80

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Solution

The fourth proportional to 46,009.60, 68,971.20 and 36,008.80 is: 53,979.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,009.60 : 68,971.20 = 36,008.80 : x
  2. Step 2: Convert to fraction form
    46,009.60/68,971.20 = 36,008.80/x
  3. Step 3: Cross multiply
    46,009.60x = 68,971.20 × 36,008.80
  4. Step 4: Simplify right side
    46,009.60x = 2,483,570,146.56
  5. Step 5: Solve for x
    x = 2,483,570,146.56/46,009.60
  6. Step 6: Final answer
    x = 53,979.39

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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.