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Finding the Fourth Proportional to 112,825.20, 169,189.20 and 56,643.60

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Solution

The fourth proportional to 112,825.20, 169,189.20 and 56,643.60 is: 84,941.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,825.20 : 169,189.20 = 56,643.60 : x
  2. Step 2: Convert to fraction form
    112,825.20/169,189.20 = 56,643.60/x
  3. Step 3: Cross multiply
    112,825.20x = 169,189.20 × 56,643.60
  4. Step 4: Simplify right side
    112,825.20x = 9,583,485,369.12
  5. Step 5: Solve for x
    x = 9,583,485,369.12/112,825.20
  6. Step 6: Final answer
    x = 84,941.00

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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.