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Finding the Fourth Proportional to 93,318.30, 139,860.81 and 73,518.66

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Solution

The fourth proportional to 93,318.30, 139,860.81 and 73,518.66 is: 110,186.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,318.30 : 139,860.81 = 73,518.66 : x
  2. Step 2: Convert to fraction form
    93,318.30/139,860.81 = 73,518.66/x
  3. Step 3: Cross multiply
    93,318.30x = 139,860.81 × 73,518.66
  4. Step 4: Simplify right side
    93,318.30x = 10,282,379,337.71
  5. Step 5: Solve for x
    x = 10,282,379,337.71/93,318.30
  6. Step 6: Final answer
    x = 110,186.10

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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.