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Finding the Fourth Proportional to 118,767.67, 163,899.41 and 65,054.61

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Solution

The fourth proportional to 118,767.67, 163,899.41 and 65,054.61 is: 89,775.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,767.67 : 163,899.41 = 65,054.61 : x
  2. Step 2: Convert to fraction form
    118,767.67/163,899.41 = 65,054.61/x
  3. Step 3: Cross multiply
    118,767.67x = 163,899.41 × 65,054.61
  4. Step 4: Simplify right side
    118,767.67x = 10,662,411,871.51
  5. Step 5: Solve for x
    x = 10,662,411,871.51/118,767.67
  6. Step 6: Final answer
    x = 89,775.37

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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.