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Finding the Fourth Proportional to 93,318.64, 139,633.50 and 55,905.16

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Solution

The fourth proportional to 93,318.64, 139,633.50 and 55,905.16 is: 83,651.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,318.64 : 139,633.50 = 55,905.16 : x
  2. Step 2: Convert to fraction form
    93,318.64/139,633.50 = 55,905.16/x
  3. Step 3: Cross multiply
    93,318.64x = 139,633.50 × 55,905.16
  4. Step 4: Simplify right side
    93,318.64x = 7,806,233,158.86
  5. Step 5: Solve for x
    x = 7,806,233,158.86/93,318.64
  6. Step 6: Final answer
    x = 83,651.38

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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.