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Finding the Fourth Proportional to 358,468.80, 537,703.20 and 308,605.20

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Solution

The fourth proportional to 358,468.80, 537,703.20 and 308,605.20 is: 462,907.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,468.80 : 537,703.20 = 308,605.20 : x
  2. Step 2: Convert to fraction form
    358,468.80/537,703.20 = 308,605.20/x
  3. Step 3: Cross multiply
    358,468.80x = 537,703.20 × 308,605.20
  4. Step 4: Simplify right side
    358,468.80x = 165,938,003,576.64
  5. Step 5: Solve for x
    x = 165,938,003,576.64/358,468.80
  6. Step 6: Final answer
    x = 462,907.80

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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.