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Finding the Fourth Proportional to 88,274.88, 121,817.88 and 47,989.64

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Solution

The fourth proportional to 88,274.88, 121,817.88 and 47,989.64 is: 66,224.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,274.88 : 121,817.88 = 47,989.64 : x
  2. Step 2: Convert to fraction form
    88,274.88/121,817.88 = 47,989.64/x
  3. Step 3: Cross multiply
    88,274.88x = 121,817.88 × 47,989.64
  4. Step 4: Simplify right side
    88,274.88x = 5,845,996,206.76
  5. Step 5: Solve for x
    x = 5,845,996,206.76/88,274.88
  6. Step 6: Final answer
    x = 66,224.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.