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Finding the Fourth Proportional to 178,763.63, 268,145.44 and 66,472.11

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Solution

The fourth proportional to 178,763.63, 268,145.44 and 66,472.11 is: 99,708.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,763.63 : 268,145.44 = 66,472.11 : x
  2. Step 2: Convert to fraction form
    178,763.63/268,145.44 = 66,472.11/x
  3. Step 3: Cross multiply
    178,763.63x = 268,145.44 × 66,472.11
  4. Step 4: Simplify right side
    178,763.63x = 17,824,193,017.50
  5. Step 5: Solve for x
    x = 17,824,193,017.50/178,763.63
  6. Step 6: Final answer
    x = 99,708.17

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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.