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Finding the Fourth Proportional to 99,461.25, 137,256.53 and 54,749.25

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Solution

The fourth proportional to 99,461.25, 137,256.53 and 54,749.25 is: 75,553.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,461.25 : 137,256.53 = 54,749.25 : x
  2. Step 2: Convert to fraction form
    99,461.25/137,256.53 = 54,749.25/x
  3. Step 3: Cross multiply
    99,461.25x = 137,256.53 × 54,749.25
  4. Step 4: Simplify right side
    99,461.25x = 7,514,691,801.36
  5. Step 5: Solve for x
    x = 7,514,691,801.36/99,461.25
  6. Step 6: Final answer
    x = 75,553.97

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1.5x scale

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.