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Finding the Fourth Proportional to 118,966.60, 164,187.62 and 71,219.93

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Solution

The fourth proportional to 118,966.60, 164,187.62 and 71,219.93 is: 98,291.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,966.60 : 164,187.62 = 71,219.93 : x
  2. Step 2: Convert to fraction form
    118,966.60/164,187.62 = 71,219.93/x
  3. Step 3: Cross multiply
    118,966.60x = 164,187.62 × 71,219.93
  4. Step 4: Simplify right side
    118,966.60x = 11,693,430,803.27
  5. Step 5: Solve for x
    x = 11,693,430,803.27/118,966.60
  6. Step 6: Final answer
    x = 98,291.71

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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.