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Finding the Fourth Proportional to 55,538.63, 76,563.59 and 39,595.40

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Solution

The fourth proportional to 55,538.63, 76,563.59 and 39,595.40 is: 54,584.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,538.63 : 76,563.59 = 39,595.40 : x
  2. Step 2: Convert to fraction form
    55,538.63/76,563.59 = 39,595.40/x
  3. Step 3: Cross multiply
    55,538.63x = 76,563.59 × 39,595.40
  4. Step 4: Simplify right side
    55,538.63x = 3,031,565,773.51
  5. Step 5: Solve for x
    x = 3,031,565,773.51/55,538.63
  6. Step 6: Final answer
    x = 54,584.81

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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.