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Finding the Fourth Proportional to 117,235.47, 175,668.80 and 90,646.41

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Solution

The fourth proportional to 117,235.47, 175,668.80 and 90,646.41 is: 135,827.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,235.47 : 175,668.80 = 90,646.41 : x
  2. Step 2: Convert to fraction form
    117,235.47/175,668.80 = 90,646.41/x
  3. Step 3: Cross multiply
    117,235.47x = 175,668.80 × 90,646.41
  4. Step 4: Simplify right side
    117,235.47x = 15,923,745,615.78
  5. Step 5: Solve for x
    x = 15,923,745,615.78/117,235.47
  6. Step 6: Final answer
    x = 135,827.03

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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.