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Finding the Fourth Proportional to 125,672.63, 173,428.25 and 71,975.43

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Solution

The fourth proportional to 125,672.63, 173,428.25 and 71,975.43 is: 99,326.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,672.63 : 173,428.25 = 71,975.43 : x
  2. Step 2: Convert to fraction form
    125,672.63/173,428.25 = 71,975.43/x
  3. Step 3: Cross multiply
    125,672.63x = 173,428.25 × 71,975.43
  4. Step 4: Simplify right side
    125,672.63x = 12,482,572,508.02
  5. Step 5: Solve for x
    x = 12,482,572,508.02/125,672.63
  6. Step 6: Final answer
    x = 99,326.11

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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.