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Finding the Fourth Proportional to 93,124.80, 139,687.20 and 84,814.20

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Solution

The fourth proportional to 93,124.80, 139,687.20 and 84,814.20 is: 127,221.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,124.80 : 139,687.20 = 84,814.20 : x
  2. Step 2: Convert to fraction form
    93,124.80/139,687.20 = 84,814.20/x
  3. Step 3: Cross multiply
    93,124.80x = 139,687.20 × 84,814.20
  4. Step 4: Simplify right side
    93,124.80x = 11,847,458,118.24
  5. Step 5: Solve for x
    x = 11,847,458,118.24/93,124.80
  6. Step 6: Final answer
    x = 127,221.30

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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.