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Finding the Fourth Proportional to 98,062.79, 135,320.96 and 55,038.29

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Solution

The fourth proportional to 98,062.79, 135,320.96 and 55,038.29 is: 75,949.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,062.79 : 135,320.96 = 55,038.29 : x
  2. Step 2: Convert to fraction form
    98,062.79/135,320.96 = 55,038.29/x
  3. Step 3: Cross multiply
    98,062.79x = 135,320.96 × 55,038.29
  4. Step 4: Simplify right side
    98,062.79x = 7,447,833,287.76
  5. Step 5: Solve for x
    x = 7,447,833,287.76/98,062.79
  6. Step 6: Final answer
    x = 75,949.64

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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.