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Finding the Fourth Proportional to 98,482.96, 136,019.64 and 71,745.04

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Solution

The fourth proportional to 98,482.96, 136,019.64 and 71,745.04 is: 99,090.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,482.96 : 136,019.64 = 71,745.04 : x
  2. Step 2: Convert to fraction form
    98,482.96/136,019.64 = 71,745.04/x
  3. Step 3: Cross multiply
    98,482.96x = 136,019.64 × 71,745.04
  4. Step 4: Simplify right side
    98,482.96x = 9,758,734,512.59
  5. Step 5: Solve for x
    x = 9,758,734,512.59/98,482.96
  6. Step 6: Final answer
    x = 99,090.59

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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.