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Finding the Fourth Proportional to 118,901.53, 164,085.48 and 67,921.03

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Solution

The fourth proportional to 118,901.53, 164,085.48 and 67,921.03 is: 93,731.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,901.53 : 164,085.48 = 67,921.03 : x
  2. Step 2: Convert to fraction form
    118,901.53/164,085.48 = 67,921.03/x
  3. Step 3: Cross multiply
    118,901.53x = 164,085.48 × 67,921.03
  4. Step 4: Simplify right side
    118,901.53x = 11,144,854,809.64
  5. Step 5: Solve for x
    x = 11,144,854,809.64/118,901.53
  6. Step 6: Final answer
    x = 93,731.80

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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.