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Finding the Fourth Proportional to 125,476.55, 173,081.55 and 74,455.66

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Solution

The fourth proportional to 125,476.55, 173,081.55 and 74,455.66 is: 102,703.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,476.55 : 173,081.55 = 74,455.66 : x
  2. Step 2: Convert to fraction form
    125,476.55/173,081.55 = 74,455.66/x
  3. Step 3: Cross multiply
    125,476.55x = 173,081.55 × 74,455.66
  4. Step 4: Simplify right side
    125,476.55x = 12,886,900,173.67
  5. Step 5: Solve for x
    x = 12,886,900,173.67/125,476.55
  6. Step 6: Final answer
    x = 102,703.65

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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.