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Finding the Fourth Proportional to 85,898.61, 118,539.86 and 48,173.67

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Solution

The fourth proportional to 85,898.61, 118,539.86 and 48,173.67 is: 66,479.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,898.61 : 118,539.86 = 48,173.67 : x
  2. Step 2: Convert to fraction form
    85,898.61/118,539.86 = 48,173.67/x
  3. Step 3: Cross multiply
    85,898.61x = 118,539.86 × 48,173.67
  4. Step 4: Simplify right side
    85,898.61x = 5,710,499,856.62
  5. Step 5: Solve for x
    x = 5,710,499,856.62/85,898.61
  6. Step 6: Final answer
    x = 66,479.54

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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.