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Finding the Fourth Proportional to 170,408.41, 235,164.54 and 98,830.87

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Solution

The fourth proportional to 170,408.41, 235,164.54 and 98,830.87 is: 136,387.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,408.41 : 235,164.54 = 98,830.87 : x
  2. Step 2: Convert to fraction form
    170,408.41/235,164.54 = 98,830.87/x
  3. Step 3: Cross multiply
    170,408.41x = 235,164.54 × 98,830.87
  4. Step 4: Simplify right side
    170,408.41x = 23,241,516,081.35
  5. Step 5: Solve for x
    x = 23,241,516,081.35/170,408.41
  6. Step 6: Final answer
    x = 136,387.14

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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.