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Finding the Fourth Proportional to 74,590.39, 111,885.59 and 61,415.08

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Solution

The fourth proportional to 74,590.39, 111,885.59 and 61,415.08 is: 92,122.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,590.39 : 111,885.59 = 61,415.08 : x
  2. Step 2: Convert to fraction form
    74,590.39/111,885.59 = 61,415.08/x
  3. Step 3: Cross multiply
    74,590.39x = 111,885.59 × 61,415.08
  4. Step 4: Simplify right side
    74,590.39x = 6,871,462,460.70
  5. Step 5: Solve for x
    x = 6,871,462,460.70/74,590.39
  6. Step 6: Final answer
    x = 92,122.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.