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Finding the Fourth Proportional to 92,813.80, 139,263.90 and 48,490.60

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Solution

The fourth proportional to 92,813.80, 139,263.90 and 48,490.60 is: 72,758.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,813.80 : 139,263.90 = 48,490.60 : x
  2. Step 2: Convert to fraction form
    92,813.80/139,263.90 = 48,490.60/x
  3. Step 3: Cross multiply
    92,813.80x = 139,263.90 × 48,490.60
  4. Step 4: Simplify right side
    92,813.80x = 6,752,990,069.34
  5. Step 5: Solve for x
    x = 6,752,990,069.34/92,813.80
  6. Step 6: Final answer
    x = 72,758.47

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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.