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Finding the Fourth Proportional to 93,243.86, 139,987.75 and 55,362.29

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Solution

The fourth proportional to 93,243.86, 139,987.75 and 55,362.29 is: 83,115.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,243.86 : 139,987.75 = 55,362.29 : x
  2. Step 2: Convert to fraction form
    93,243.86/139,987.75 = 55,362.29/x
  3. Step 3: Cross multiply
    93,243.86x = 139,987.75 × 55,362.29
  4. Step 4: Simplify right side
    93,243.86x = 7,750,042,306.17
  5. Step 5: Solve for x
    x = 7,750,042,306.17/93,243.86
  6. Step 6: Final answer
    x = 83,115.84

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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.