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Finding the Fourth Proportional to 84,147.56, 116,122.02 and 45,905.48

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Solution

The fourth proportional to 84,147.56, 116,122.02 and 45,905.48 is: 63,348.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,147.56 : 116,122.02 = 45,905.48 : x
  2. Step 2: Convert to fraction form
    84,147.56/116,122.02 = 45,905.48/x
  3. Step 3: Cross multiply
    84,147.56x = 116,122.02 × 45,905.48
  4. Step 4: Simplify right side
    84,147.56x = 5,330,637,066.67
  5. Step 5: Solve for x
    x = 5,330,637,066.67/84,147.56
  6. Step 6: Final answer
    x = 63,348.68

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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.