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Finding the Fourth Proportional to 93,281.40, 139,922.10 and 30,951.90

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Solution

The fourth proportional to 93,281.40, 139,922.10 and 30,951.90 is: 46,427.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,281.40 : 139,922.10 = 30,951.90 : x
  2. Step 2: Convert to fraction form
    93,281.40/139,922.10 = 30,951.90/x
  3. Step 3: Cross multiply
    93,281.40x = 139,922.10 × 30,951.90
  4. Step 4: Simplify right side
    93,281.40x = 4,330,854,846.99
  5. Step 5: Solve for x
    x = 4,330,854,846.99/93,281.40
  6. Step 6: Final answer
    x = 46,427.85

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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.