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Finding the Fourth Proportional to 93,875.40, 140,553.90 and 73,139.40

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Solution

The fourth proportional to 93,875.40, 140,553.90 and 73,139.40 is: 109,507.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,875.40 : 140,553.90 = 73,139.40 : x
  2. Step 2: Convert to fraction form
    93,875.40/140,553.90 = 73,139.40/x
  3. Step 3: Cross multiply
    93,875.40x = 140,553.90 × 73,139.40
  4. Step 4: Simplify right side
    93,875.40x = 10,280,027,913.66
  5. Step 5: Solve for x
    x = 10,280,027,913.66/93,875.40
  6. Step 6: Final answer
    x = 109,507.15

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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.