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Finding the Fourth Proportional to 65,107.20, 97,855.20 and 56,553.60

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Solution

The fourth proportional to 65,107.20, 97,855.20 and 56,553.60 is: 84,999.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,107.20 : 97,855.20 = 56,553.60 : x
  2. Step 2: Convert to fraction form
    65,107.20/97,855.20 = 56,553.60/x
  3. Step 3: Cross multiply
    65,107.20x = 97,855.20 × 56,553.60
  4. Step 4: Simplify right side
    65,107.20x = 5,534,063,838.72
  5. Step 5: Solve for x
    x = 5,534,063,838.72/65,107.20
  6. Step 6: Final answer
    x = 84,999.26

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1.5x scale

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.