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Finding the Fourth Proportional to 93,245.47, 139,990.14 and 55,363.88

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Solution

The fourth proportional to 93,245.47, 139,990.14 and 55,363.88 is: 83,118.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,245.47 : 139,990.14 = 55,363.88 : x
  2. Step 2: Convert to fraction form
    93,245.47/139,990.14 = 55,363.88/x
  3. Step 3: Cross multiply
    93,245.47x = 139,990.14 × 55,363.88
  4. Step 4: Simplify right side
    93,245.47x = 7,750,397,662.12
  5. Step 5: Solve for x
    x = 7,750,397,662.12/93,245.47
  6. Step 6: Final answer
    x = 83,118.22

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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.