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Finding the Fourth Proportional to 351,427.80, 527,141.70 and 174,280.80

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Solution

The fourth proportional to 351,427.80, 527,141.70 and 174,280.80 is: 261,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,427.80 : 527,141.70 = 174,280.80 : x
  2. Step 2: Convert to fraction form
    351,427.80/527,141.70 = 174,280.80/x
  3. Step 3: Cross multiply
    351,427.80x = 527,141.70 × 174,280.80
  4. Step 4: Simplify right side
    351,427.80x = 91,870,677,189.36
  5. Step 5: Solve for x
    x = 91,870,677,189.36/351,427.80
  6. Step 6: Final answer
    x = 261,421.20

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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.