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Finding the Fourth Proportional to 65,886.03, 90,885.61 and 41,679.50

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Solution

The fourth proportional to 65,886.03, 90,885.61 and 41,679.50 is: 57,494.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,886.03 : 90,885.61 = 41,679.50 : x
  2. Step 2: Convert to fraction form
    65,886.03/90,885.61 = 41,679.50/x
  3. Step 3: Cross multiply
    65,886.03x = 90,885.61 × 41,679.50
  4. Step 4: Simplify right side
    65,886.03x = 3,788,066,782.00
  5. Step 5: Solve for x
    x = 3,788,066,782.00/65,886.03
  6. Step 6: Final answer
    x = 57,494.23

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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.