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Finding the Fourth Proportional to 178,617, 246,491.46 and 99,129

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Solution

The fourth proportional to 178,617, 246,491.46 and 99,129 is: 136,798.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,617 : 246,491.46 = 99,129 : x
  2. Step 2: Convert to fraction form
    178,617/246,491.46 = 99,129/x
  3. Step 3: Cross multiply
    178,617x = 246,491.46 × 99,129
  4. Step 4: Simplify right side
    178,617x = 24,434,451,938.34
  5. Step 5: Solve for x
    x = 24,434,451,938.34/178,617
  6. Step 6: Final answer
    x = 136,798.02

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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.