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Finding the Fourth Proportional to 93,207.34, 139,745.13 and 30,007.90

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Solution

The fourth proportional to 93,207.34, 139,745.13 and 30,007.90 is: 44,990.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,207.34 : 139,745.13 = 30,007.90 : x
  2. Step 2: Convert to fraction form
    93,207.34/139,745.13 = 30,007.90/x
  3. Step 3: Cross multiply
    93,207.34x = 139,745.13 × 30,007.90
  4. Step 4: Simplify right side
    93,207.34x = 4,193,457,886.53
  5. Step 5: Solve for x
    x = 4,193,457,886.53/93,207.34
  6. Step 6: Final answer
    x = 44,990.64

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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.