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Finding the Fourth Proportional to 84,504.74, 116,481.76 and 57,272.34

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Solution

The fourth proportional to 84,504.74, 116,481.76 and 57,272.34 is: 78,944.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,504.74 : 116,481.76 = 57,272.34 : x
  2. Step 2: Convert to fraction form
    84,504.74/116,481.76 = 57,272.34/x
  3. Step 3: Cross multiply
    84,504.74x = 116,481.76 × 57,272.34
  4. Step 4: Simplify right side
    84,504.74x = 6,671,182,962.52
  5. Step 5: Solve for x
    x = 6,671,182,962.52/84,504.74
  6. Step 6: Final answer
    x = 78,944.48

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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.