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Finding the Fourth Proportional to 358,747.25, 538,145.48 and 118,860.69

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Solution

The fourth proportional to 358,747.25, 538,145.48 and 118,860.69 is: 178,299.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,747.25 : 538,145.48 = 118,860.69 : x
  2. Step 2: Convert to fraction form
    358,747.25/538,145.48 = 118,860.69/x
  3. Step 3: Cross multiply
    358,747.25x = 538,145.48 × 118,860.69
  4. Step 4: Simplify right side
    358,747.25x = 63,964,343,073.18
  5. Step 5: Solve for x
    x = 63,964,343,073.18/358,747.25
  6. Step 6: Final answer
    x = 178,299.19

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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.