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Finding the Fourth Proportional to 125,790.76, 173,613.54 and 75,493

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Solution

The fourth proportional to 125,790.76, 173,613.54 and 75,493 is: 104,193.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,790.76 : 173,613.54 = 75,493 : x
  2. Step 2: Convert to fraction form
    125,790.76/173,613.54 = 75,493/x
  3. Step 3: Cross multiply
    125,790.76x = 173,613.54 × 75,493
  4. Step 4: Simplify right side
    125,790.76x = 13,106,606,975.22
  5. Step 5: Solve for x
    x = 13,106,606,975.22/125,790.76
  6. Step 6: Final answer
    x = 104,193.72

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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.