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Finding the Fourth Proportional to 112,744.39, 169,124.48 and 45,276.42

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Solution

The fourth proportional to 112,744.39, 169,124.48 and 45,276.42 is: 67,917.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,744.39 : 169,124.48 = 45,276.42 : x
  2. Step 2: Convert to fraction form
    112,744.39/169,124.48 = 45,276.42/x
  3. Step 3: Cross multiply
    112,744.39x = 169,124.48 × 45,276.42
  4. Step 4: Simplify right side
    112,744.39x = 7,657,350,615.06
  5. Step 5: Solve for x
    x = 7,657,350,615.06/112,744.39
  6. Step 6: Final answer
    x = 67,917.80

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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.