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Finding the Fourth Proportional to 178,633.05, 267,974.15 and 66,303.74

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Solution

The fourth proportional to 178,633.05, 267,974.15 and 66,303.74 is: 99,464.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,633.05 : 267,974.15 = 66,303.74 : x
  2. Step 2: Convert to fraction form
    178,633.05/267,974.15 = 66,303.74/x
  3. Step 3: Cross multiply
    178,633.05x = 267,974.15 × 66,303.74
  4. Step 4: Simplify right side
    178,633.05x = 17,767,688,368.32
  5. Step 5: Solve for x
    x = 17,767,688,368.32/178,633.05
  6. Step 6: Final answer
    x = 99,464.73

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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.