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Finding the Fourth Proportional to 176,388.61, 243,410.67 and 99,914.76

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Solution

The fourth proportional to 176,388.61, 243,410.67 and 99,914.76 is: 137,879.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,388.61 : 243,410.67 = 99,914.76 : x
  2. Step 2: Convert to fraction form
    176,388.61/243,410.67 = 99,914.76/x
  3. Step 3: Cross multiply
    176,388.61x = 243,410.67 × 99,914.76
  4. Step 4: Simplify right side
    176,388.61x = 24,320,318,674.49
  5. Step 5: Solve for x
    x = 24,320,318,674.49/176,388.61
  6. Step 6: Final answer
    x = 137,879.19

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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.