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Finding the Fourth Proportional to 85,898.06, 118,539.11 and 47,663.42

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Solution

The fourth proportional to 85,898.06, 118,539.11 and 47,663.42 is: 65,775.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,898.06 : 118,539.11 = 47,663.42 : x
  2. Step 2: Convert to fraction form
    85,898.06/118,539.11 = 47,663.42/x
  3. Step 3: Cross multiply
    85,898.06x = 118,539.11 × 47,663.42
  4. Step 4: Simplify right side
    85,898.06x = 5,649,978,912.82
  5. Step 5: Solve for x
    x = 5,649,978,912.82/85,898.06
  6. Step 6: Final answer
    x = 65,775.40

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1.5x scale

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.