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Finding the Fourth Proportional to 117,090.75, 175,636.13 and 43,218.75

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Solution

The fourth proportional to 117,090.75, 175,636.13 and 43,218.75 is: 64,828.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,090.75 : 175,636.13 = 43,218.75 : x
  2. Step 2: Convert to fraction form
    117,090.75/175,636.13 = 43,218.75/x
  3. Step 3: Cross multiply
    117,090.75x = 175,636.13 × 43,218.75
  4. Step 4: Simplify right side
    117,090.75x = 7,590,773,777.34
  5. Step 5: Solve for x
    x = 7,590,773,777.34/117,090.75
  6. Step 6: Final answer
    x = 64,828.13

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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.