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Finding the Fourth Proportional to 93,281.50, 139,936.07 and 30,080.84

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Solution

The fourth proportional to 93,281.50, 139,936.07 and 30,080.84 is: 45,125.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,281.50 : 139,936.07 = 30,080.84 : x
  2. Step 2: Convert to fraction form
    93,281.50/139,936.07 = 30,080.84/x
  3. Step 3: Cross multiply
    93,281.50x = 139,936.07 × 30,080.84
  4. Step 4: Simplify right side
    93,281.50x = 4,209,394,531.90
  5. Step 5: Solve for x
    x = 4,209,394,531.90/93,281.50
  6. Step 6: Final answer
    x = 45,125.72

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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.