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Finding the Fourth Proportional to 56,656.80, 84,812.40 and 33,213.60

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Solution

The fourth proportional to 56,656.80, 84,812.40 and 33,213.60 is: 49,719.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,656.80 : 84,812.40 = 33,213.60 : x
  2. Step 2: Convert to fraction form
    56,656.80/84,812.40 = 33,213.60/x
  3. Step 3: Cross multiply
    56,656.80x = 84,812.40 × 33,213.60
  4. Step 4: Simplify right side
    56,656.80x = 2,816,925,128.64
  5. Step 5: Solve for x
    x = 2,816,925,128.64/56,656.80
  6. Step 6: Final answer
    x = 49,719.10

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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.