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Finding the Fourth Proportional to 55,636.80, 83,455.20 and 55,053.60

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Solution

The fourth proportional to 55,636.80, 83,455.20 and 55,053.60 is: 82,580.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,636.80 : 83,455.20 = 55,053.60 : x
  2. Step 2: Convert to fraction form
    55,636.80/83,455.20 = 55,053.60/x
  3. Step 3: Cross multiply
    55,636.80x = 83,455.20 × 55,053.60
  4. Step 4: Simplify right side
    55,636.80x = 4,594,509,198.72
  5. Step 5: Solve for x
    x = 4,594,509,198.72/55,636.80
  6. Step 6: Final answer
    x = 82,580.40

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1.5x scale

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.