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Finding the Fourth Proportional to 103,230.48, 142,467.48 and 62,946.48

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Solution

The fourth proportional to 103,230.48, 142,467.48 and 62,946.48 is: 86,871.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,230.48 : 142,467.48 = 62,946.48 : x
  2. Step 2: Convert to fraction form
    103,230.48/142,467.48 = 62,946.48/x
  3. Step 3: Cross multiply
    103,230.48x = 142,467.48 × 62,946.48
  4. Step 4: Simplify right side
    103,230.48x = 8,967,826,380.47
  5. Step 5: Solve for x
    x = 8,967,826,380.47/103,230.48
  6. Step 6: Final answer
    x = 86,871.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.