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Finding the Fourth Proportional to 121,843.53, 182,779.88 and 42,941.43

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Solution

The fourth proportional to 121,843.53, 182,779.88 and 42,941.43 is: 64,417.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,843.53 : 182,779.88 = 42,941.43 : x
  2. Step 2: Convert to fraction form
    121,843.53/182,779.88 = 42,941.43/x
  3. Step 3: Cross multiply
    121,843.53x = 182,779.88 × 42,941.43
  4. Step 4: Simplify right side
    121,843.53x = 7,848,829,207.72
  5. Step 5: Solve for x
    x = 7,848,829,207.72/121,843.53
  6. Step 6: Final answer
    x = 64,417.28

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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.