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Finding the Fourth Proportional to 118,974.47, 164,184.99 and 65,259.92

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Solution

The fourth proportional to 118,974.47, 164,184.99 and 65,259.92 is: 90,058.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,974.47 : 164,184.99 = 65,259.92 : x
  2. Step 2: Convert to fraction form
    118,974.47/164,184.99 = 65,259.92/x
  3. Step 3: Cross multiply
    118,974.47x = 164,184.99 × 65,259.92
  4. Step 4: Simplify right side
    118,974.47x = 10,714,699,312.60
  5. Step 5: Solve for x
    x = 10,714,699,312.60/118,974.47
  6. Step 6: Final answer
    x = 90,058.81

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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.