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Finding the Fourth Proportional to 118,070.46, 162,936.36 and 64,355.31

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Solution

The fourth proportional to 118,070.46, 162,936.36 and 64,355.31 is: 88,809.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,070.46 : 162,936.36 = 64,355.31 : x
  2. Step 2: Convert to fraction form
    118,070.46/162,936.36 = 64,355.31/x
  3. Step 3: Cross multiply
    118,070.46x = 162,936.36 × 64,355.31
  4. Step 4: Simplify right side
    118,070.46x = 10,485,819,958.07
  5. Step 5: Solve for x
    x = 10,485,819,958.07/118,070.46
  6. Step 6: Final answer
    x = 88,809.85

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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.