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Finding the Fourth Proportional to 358,603.78, 537,819.56 and 105,815.97

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Solution

The fourth proportional to 358,603.78, 537,819.56 and 105,815.97 is: 158,698.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,603.78 : 537,819.56 = 105,815.97 : x
  2. Step 2: Convert to fraction form
    358,603.78/537,819.56 = 105,815.97/x
  3. Step 3: Cross multiply
    358,603.78x = 537,819.56 × 105,815.97
  4. Step 4: Simplify right side
    358,603.78x = 56,909,898,426.37
  5. Step 5: Solve for x
    x = 56,909,898,426.37/358,603.78
  6. Step 6: Final answer
    x = 158,698.55

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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.