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Finding the Fourth Proportional to 176,489.12, 264,474.48 and 139,140.56

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Solution

The fourth proportional to 176,489.12, 264,474.48 and 139,140.56 is: 208,506.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,489.12 : 264,474.48 = 139,140.56 : x
  2. Step 2: Convert to fraction form
    176,489.12/264,474.48 = 139,140.56/x
  3. Step 3: Cross multiply
    176,489.12x = 264,474.48 × 139,140.56
  4. Step 4: Simplify right side
    176,489.12x = 36,799,127,252.91
  5. Step 5: Solve for x
    x = 36,799,127,252.91/176,489.12
  6. Step 6: Final answer
    x = 208,506.49

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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.