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Finding the Fourth Proportional to 118,972.67, 164,186.88 and 65,259.95

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Solution

The fourth proportional to 118,972.67, 164,186.88 and 65,259.95 is: 90,061.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,972.67 : 164,186.88 = 65,259.95 : x
  2. Step 2: Convert to fraction form
    118,972.67/164,186.88 = 65,259.95/x
  3. Step 3: Cross multiply
    118,972.67x = 164,186.88 × 65,259.95
  4. Step 4: Simplify right side
    118,972.67x = 10,714,827,579.46
  5. Step 5: Solve for x
    x = 10,714,827,579.46/118,972.67
  6. Step 6: Final answer
    x = 90,061.25

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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.