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Finding the Fourth Proportional to 61,971.72, 85,521.48 and 33,677.40

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Solution

The fourth proportional to 61,971.72, 85,521.48 and 33,677.40 is: 46,475.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,971.72 : 85,521.48 = 33,677.40 : x
  2. Step 2: Convert to fraction form
    61,971.72/85,521.48 = 33,677.40/x
  3. Step 3: Cross multiply
    61,971.72x = 85,521.48 × 33,677.40
  4. Step 4: Simplify right side
    61,971.72x = 2,880,141,090.55
  5. Step 5: Solve for x
    x = 2,880,141,090.55/61,971.72
  6. Step 6: Final answer
    x = 46,475.09

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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.