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Finding the Fourth Proportional to 92,969.70, 139,395.42 and 42,982.98

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Solution

The fourth proportional to 92,969.70, 139,395.42 and 42,982.98 is: 64,447.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,969.70 : 139,395.42 = 42,982.98 : x
  2. Step 2: Convert to fraction form
    92,969.70/139,395.42 = 42,982.98/x
  3. Step 3: Cross multiply
    92,969.70x = 139,395.42 × 42,982.98
  4. Step 4: Simplify right side
    92,969.70x = 5,991,630,549.95
  5. Step 5: Solve for x
    x = 5,991,630,549.95/92,969.70
  6. Step 6: Final answer
    x = 64,447.13

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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.