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Finding the Fourth Proportional to 118,798.88, 163,936.60 and 65,084.16

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Solution

The fourth proportional to 118,798.88, 163,936.60 and 65,084.16 is: 89,812.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,798.88 : 163,936.60 = 65,084.16 : x
  2. Step 2: Convert to fraction form
    118,798.88/163,936.60 = 65,084.16/x
  3. Step 3: Cross multiply
    118,798.88x = 163,936.60 × 65,084.16
  4. Step 4: Simplify right side
    118,798.88x = 10,669,675,904.26
  5. Step 5: Solve for x
    x = 10,669,675,904.26/118,798.88
  6. Step 6: Final answer
    x = 89,812.93

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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.