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Finding the Fourth Proportional to 55,777.68, 76,973.04 and 33,421.68

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Solution

The fourth proportional to 55,777.68, 76,973.04 and 33,421.68 is: 46,121.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,777.68 : 76,973.04 = 33,421.68 : x
  2. Step 2: Convert to fraction form
    55,777.68/76,973.04 = 33,421.68/x
  3. Step 3: Cross multiply
    55,777.68x = 76,973.04 × 33,421.68
  4. Step 4: Simplify right side
    55,777.68x = 2,572,568,311.51
  5. Step 5: Solve for x
    x = 2,572,568,311.51/55,777.68
  6. Step 6: Final answer
    x = 46,121.82

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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.