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Finding the Fourth Proportional to 353,978.91, 531,139.68 and 176,511.15

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Solution

The fourth proportional to 353,978.91, 531,139.68 and 176,511.15 is: 264,852.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,978.91 : 531,139.68 = 176,511.15 : x
  2. Step 2: Convert to fraction form
    353,978.91/531,139.68 = 176,511.15/x
  3. Step 3: Cross multiply
    353,978.91x = 531,139.68 × 176,511.15
  4. Step 4: Simplify right side
    353,978.91x = 93,752,075,727.43
  5. Step 5: Solve for x
    x = 93,752,075,727.43/353,978.91
  6. Step 6: Final answer
    x = 264,852.15

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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.