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Finding the Fourth Proportional to 55,778.88, 76,986.72 and 33,435.84

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Solution

The fourth proportional to 55,778.88, 76,986.72 and 33,435.84 is: 46,148.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,778.88 : 76,986.72 = 33,435.84 : x
  2. Step 2: Convert to fraction form
    55,778.88/76,986.72 = 33,435.84/x
  3. Step 3: Cross multiply
    55,778.88x = 76,986.72 × 33,435.84
  4. Step 4: Simplify right side
    55,778.88x = 2,574,115,652.04
  5. Step 5: Solve for x
    x = 2,574,115,652.04/55,778.88
  6. Step 6: Final answer
    x = 46,148.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.