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Finding the Fourth Proportional to 97,590.84, 134,625.90 and 61,720.44

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Solution

The fourth proportional to 97,590.84, 134,625.90 and 61,720.44 is: 85,142.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,590.84 : 134,625.90 = 61,720.44 : x
  2. Step 2: Convert to fraction form
    97,590.84/134,625.90 = 61,720.44/x
  3. Step 3: Cross multiply
    97,590.84x = 134,625.90 × 61,720.44
  4. Step 4: Simplify right side
    97,590.84x = 8,309,169,783.40
  5. Step 5: Solve for x
    x = 8,309,169,783.40/97,590.84
  6. Step 6: Final answer
    x = 85,142.93

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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.