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Finding the Fourth Proportional to 358,726.86, 538,121.25 and 92,485.08

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Solution

The fourth proportional to 358,726.86, 538,121.25 and 92,485.08 is: 138,735.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,726.86 : 538,121.25 = 92,485.08 : x
  2. Step 2: Convert to fraction form
    358,726.86/538,121.25 = 92,485.08/x
  3. Step 3: Cross multiply
    358,726.86x = 538,121.25 × 92,485.08
  4. Step 4: Simplify right side
    358,726.86x = 49,768,186,855.95
  5. Step 5: Solve for x
    x = 49,768,186,855.95/358,726.86
  6. Step 6: Final answer
    x = 138,735.60

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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.