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Finding the Fourth Proportional to 61,866.81, 92,818.62 and 19,749.60

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Solution

The fourth proportional to 61,866.81, 92,818.62 and 19,749.60 is: 29,630.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,866.81 : 92,818.62 = 19,749.60 : x
  2. Step 2: Convert to fraction form
    61,866.81/92,818.62 = 19,749.60/x
  3. Step 3: Cross multiply
    61,866.81x = 92,818.62 × 19,749.60
  4. Step 4: Simplify right side
    61,866.81x = 1,833,130,617.55
  5. Step 5: Solve for x
    x = 1,833,130,617.55/61,866.81
  6. Step 6: Final answer
    x = 29,630.28

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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.