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Finding the Fourth Proportional to 93,274.80, 139,912.20 and 53,811.60

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Solution

The fourth proportional to 93,274.80, 139,912.20 and 53,811.60 is: 80,717.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,274.80 : 139,912.20 = 53,811.60 : x
  2. Step 2: Convert to fraction form
    93,274.80/139,912.20 = 53,811.60/x
  3. Step 3: Cross multiply
    93,274.80x = 139,912.20 × 53,811.60
  4. Step 4: Simplify right side
    93,274.80x = 7,528,899,341.52
  5. Step 5: Solve for x
    x = 7,528,899,341.52/93,274.80
  6. Step 6: Final answer
    x = 80,717.40

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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.