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Finding the Fourth Proportional to 117,551.40, 176,327.10 and 100,638.60

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Solution

The fourth proportional to 117,551.40, 176,327.10 and 100,638.60 is: 150,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,551.40 : 176,327.10 = 100,638.60 : x
  2. Step 2: Convert to fraction form
    117,551.40/176,327.10 = 100,638.60/x
  3. Step 3: Cross multiply
    117,551.40x = 176,327.10 × 100,638.60
  4. Step 4: Simplify right side
    117,551.40x = 17,745,312,486.06
  5. Step 5: Solve for x
    x = 17,745,312,486.06/117,551.40
  6. Step 6: Final answer
    x = 150,957.90

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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.