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Finding the Fourth Proportional to 93,470.63, 139,982.45 and 53,907.80

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Solution

The fourth proportional to 93,470.63, 139,982.45 and 53,907.80 is: 80,732.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,470.63 : 139,982.45 = 53,907.80 : x
  2. Step 2: Convert to fraction form
    93,470.63/139,982.45 = 53,907.80/x
  3. Step 3: Cross multiply
    93,470.63x = 139,982.45 × 53,907.80
  4. Step 4: Simplify right side
    93,470.63x = 7,546,144,948.66
  5. Step 5: Solve for x
    x = 7,546,144,948.66/93,470.63
  6. Step 6: Final answer
    x = 80,732.80

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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.