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Finding the Fourth Proportional to 57,573.12, 79,447.86 and 32,421

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Solution

The fourth proportional to 57,573.12, 79,447.86 and 32,421 is: 44,739.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,573.12 : 79,447.86 = 32,421 : x
  2. Step 2: Convert to fraction form
    57,573.12/79,447.86 = 32,421/x
  3. Step 3: Cross multiply
    57,573.12x = 79,447.86 × 32,421
  4. Step 4: Simplify right side
    57,573.12x = 2,575,779,069.06
  5. Step 5: Solve for x
    x = 2,575,779,069.06/57,573.12
  6. Step 6: Final answer
    x = 44,739.26

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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.