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Finding the Fourth Proportional to 55,815.80, 83,715.60 and 16,368.80

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Solution

The fourth proportional to 55,815.80, 83,715.60 and 16,368.80 is: 24,550.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,815.80 : 83,715.60 = 16,368.80 : x
  2. Step 2: Convert to fraction form
    55,815.80/83,715.60 = 16,368.80/x
  3. Step 3: Cross multiply
    55,815.80x = 83,715.60 × 16,368.80
  4. Step 4: Simplify right side
    55,815.80x = 1,370,323,913.28
  5. Step 5: Solve for x
    x = 1,370,323,913.28/55,815.80
  6. Step 6: Final answer
    x = 24,550.82

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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.