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Finding the Fourth Proportional to 125,509.81, 173,201.76 and 71,060.57

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Solution

The fourth proportional to 125,509.81, 173,201.76 and 71,060.57 is: 98,062.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,509.81 : 173,201.76 = 71,060.57 : x
  2. Step 2: Convert to fraction form
    125,509.81/173,201.76 = 71,060.57/x
  3. Step 3: Cross multiply
    125,509.81x = 173,201.76 × 71,060.57
  4. Step 4: Simplify right side
    125,509.81x = 12,307,815,790.60
  5. Step 5: Solve for x
    x = 12,307,815,790.60/125,509.81
  6. Step 6: Final answer
    x = 98,062.58

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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.