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Finding the Fourth Proportional to 61,921.16, 92,881.72 and 15,173.64

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Solution

The fourth proportional to 61,921.16, 92,881.72 and 15,173.64 is: 22,760.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,921.16 : 92,881.72 = 15,173.64 : x
  2. Step 2: Convert to fraction form
    61,921.16/92,881.72 = 15,173.64/x
  3. Step 3: Cross multiply
    61,921.16x = 92,881.72 × 15,173.64
  4. Step 4: Simplify right side
    61,921.16x = 1,409,353,781.86
  5. Step 5: Solve for x
    x = 1,409,353,781.86/61,921.16
  6. Step 6: Final answer
    x = 22,760.46

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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.