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Finding the Fourth Proportional to 127,640.99, 191,461.49 and 34,144.31

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Solution

The fourth proportional to 127,640.99, 191,461.49 and 34,144.31 is: 51,216.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,640.99 : 191,461.49 = 34,144.31 : x
  2. Step 2: Convert to fraction form
    127,640.99/191,461.49 = 34,144.31/x
  3. Step 3: Cross multiply
    127,640.99x = 191,461.49 × 34,144.31
  4. Step 4: Simplify right side
    127,640.99x = 6,537,320,903.60
  5. Step 5: Solve for x
    x = 6,537,320,903.60/127,640.99
  6. Step 6: Final answer
    x = 51,216.47

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1.5x scale

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.