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Finding the Fourth Proportional to 92,798.42, 139,135.12 and 42,850.98

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Solution

The fourth proportional to 92,798.42, 139,135.12 and 42,850.98 is: 64,247.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,798.42 : 139,135.12 = 42,850.98 : x
  2. Step 2: Convert to fraction form
    92,798.42/139,135.12 = 42,850.98/x
  3. Step 3: Cross multiply
    92,798.42x = 139,135.12 × 42,850.98
  4. Step 4: Simplify right side
    92,798.42x = 5,962,076,137.29
  5. Step 5: Solve for x
    x = 5,962,076,137.29/92,798.42
  6. Step 6: Final answer
    x = 64,247.61

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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.