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Finding the Fourth Proportional to 93,171.84, 139,785.74 and 29,127.40

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Solution

The fourth proportional to 93,171.84, 139,785.74 and 29,127.40 is: 43,699.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,171.84 : 139,785.74 = 29,127.40 : x
  2. Step 2: Convert to fraction form
    93,171.84/139,785.74 = 29,127.40/x
  3. Step 3: Cross multiply
    93,171.84x = 139,785.74 × 29,127.40
  4. Step 4: Simplify right side
    93,171.84x = 4,071,595,163.28
  5. Step 5: Solve for x
    x = 4,071,595,163.28/93,171.84
  6. Step 6: Final answer
    x = 43,699.85

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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.