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Finding the Fourth Proportional to 117,239.40, 175,822.38 and 42,349.68

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Solution

The fourth proportional to 117,239.40, 175,822.38 and 42,349.68 is: 63,511.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,239.40 : 175,822.38 = 42,349.68 : x
  2. Step 2: Convert to fraction form
    117,239.40/175,822.38 = 42,349.68/x
  3. Step 3: Cross multiply
    117,239.40x = 175,822.38 × 42,349.68
  4. Step 4: Simplify right side
    117,239.40x = 7,446,021,529.84
  5. Step 5: Solve for x
    x = 7,446,021,529.84/117,239.40
  6. Step 6: Final answer
    x = 63,511.26

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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.