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Finding the Fourth Proportional to 84,008.85, 125,913.10 and 58,570.80

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Solution

The fourth proportional to 84,008.85, 125,913.10 and 58,570.80 is: 87,786.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,008.85 : 125,913.10 = 58,570.80 : x
  2. Step 2: Convert to fraction form
    84,008.85/125,913.10 = 58,570.80/x
  3. Step 3: Cross multiply
    84,008.85x = 125,913.10 × 58,570.80
  4. Step 4: Simplify right side
    84,008.85x = 7,374,830,997.48
  5. Step 5: Solve for x
    x = 7,374,830,997.48/84,008.85
  6. Step 6: Final answer
    x = 87,786.36

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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.