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Finding the Fourth Proportional to 93,711.40, 140,348.40 and 91,832.20

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Solution

The fourth proportional to 93,711.40, 140,348.40 and 91,832.20 is: 137,533.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,711.40 : 140,348.40 = 91,832.20 : x
  2. Step 2: Convert to fraction form
    93,711.40/140,348.40 = 91,832.20/x
  3. Step 3: Cross multiply
    93,711.40x = 140,348.40 × 91,832.20
  4. Step 4: Simplify right side
    93,711.40x = 12,888,502,338.48
  5. Step 5: Solve for x
    x = 12,888,502,338.48/93,711.40
  6. Step 6: Final answer
    x = 137,533.99

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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.