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Finding the Fourth Proportional to 93,069.84, 139,620.44 and 43,129.68

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Solution

The fourth proportional to 93,069.84, 139,620.44 and 43,129.68 is: 64,701.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,069.84 : 139,620.44 = 43,129.68 : x
  2. Step 2: Convert to fraction form
    93,069.84/139,620.44 = 43,129.68/x
  3. Step 3: Cross multiply
    93,069.84x = 139,620.44 × 43,129.68
  4. Step 4: Simplify right side
    93,069.84x = 6,021,784,898.66
  5. Step 5: Solve for x
    x = 6,021,784,898.66/93,069.84
  6. Step 6: Final answer
    x = 64,701.79

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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.