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Finding the Fourth Proportional to 55,447.20, 83,041.20 and 54,333.60

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Solution

The fourth proportional to 55,447.20, 83,041.20 and 54,333.60 is: 81,373.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,447.20 : 83,041.20 = 54,333.60 : x
  2. Step 2: Convert to fraction form
    55,447.20/83,041.20 = 54,333.60/x
  3. Step 3: Cross multiply
    55,447.20x = 83,041.20 × 54,333.60
  4. Step 4: Simplify right side
    55,447.20x = 4,511,927,344.32
  5. Step 5: Solve for x
    x = 4,511,927,344.32/55,447.20
  6. Step 6: Final answer
    x = 81,373.40

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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.