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Finding the Fourth Proportional to 162,810.61, 244,373.56 and 78,629.94

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Solution

The fourth proportional to 162,810.61, 244,373.56 and 78,629.94 is: 118,021.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,810.61 : 244,373.56 = 78,629.94 : x
  2. Step 2: Convert to fraction form
    162,810.61/244,373.56 = 78,629.94/x
  3. Step 3: Cross multiply
    162,810.61x = 244,373.56 × 78,629.94
  4. Step 4: Simplify right side
    162,810.61x = 19,215,078,163.81
  5. Step 5: Solve for x
    x = 19,215,078,163.81/162,810.61
  6. Step 6: Final answer
    x = 118,021.05

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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.