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Finding the Fourth Proportional to 358,909.98, 538,458.42 and 134,287.98

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Solution

The fourth proportional to 358,909.98, 538,458.42 and 134,287.98 is: 201,466.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,909.98 : 538,458.42 = 134,287.98 : x
  2. Step 2: Convert to fraction form
    358,909.98/538,458.42 = 134,287.98/x
  3. Step 3: Cross multiply
    358,909.98x = 538,458.42 × 134,287.98
  4. Step 4: Simplify right side
    358,909.98x = 72,308,493,535.79
  5. Step 5: Solve for x
    x = 72,308,493,535.79/358,909.98
  6. Step 6: Final answer
    x = 201,466.93

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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.