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Finding the Fourth Proportional to 84,859.30, 118,647.50 and 84,859.30

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Solution

The fourth proportional to 84,859.30, 118,647.50 and 84,859.30 is: 118,647.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,859.30 : 118,647.50 = 84,859.30 : x
  2. Step 2: Convert to fraction form
    84,859.30/118,647.50 = 84,859.30/x
  3. Step 3: Cross multiply
    84,859.30x = 118,647.50 × 84,859.30
  4. Step 4: Simplify right side
    84,859.30x = 10,068,343,796.75
  5. Step 5: Solve for x
    x = 10,068,343,796.75/84,859.30
  6. Step 6: Final answer
    x = 118,647.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.