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Finding the Fourth Proportional to 162,847.67, 244,303.70 and 78,666.39

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Solution

The fourth proportional to 162,847.67, 244,303.70 and 78,666.39 is: 118,015.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,847.67 : 244,303.70 = 78,666.39 : x
  2. Step 2: Convert to fraction form
    162,847.67/244,303.70 = 78,666.39/x
  3. Step 3: Cross multiply
    162,847.67x = 244,303.70 × 78,666.39
  4. Step 4: Simplify right side
    162,847.67x = 19,218,489,749.31
  5. Step 5: Solve for x
    x = 19,218,489,749.31/162,847.67
  6. Step 6: Final answer
    x = 118,015.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.