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Finding the Fourth Proportional to 98,335.30, 135,702.21 and 55,902.04

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Solution

The fourth proportional to 98,335.30, 135,702.21 and 55,902.04 is: 77,144.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,335.30 : 135,702.21 = 55,902.04 : x
  2. Step 2: Convert to fraction form
    98,335.30/135,702.21 = 55,902.04/x
  3. Step 3: Cross multiply
    98,335.30x = 135,702.21 × 55,902.04
  4. Step 4: Simplify right side
    98,335.30x = 7,586,030,371.51
  5. Step 5: Solve for x
    x = 7,586,030,371.51/98,335.30
  6. Step 6: Final answer
    x = 77,144.53

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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.