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Finding the Fourth Proportional to 406,039.80, 608,573.70 and 169,260.60

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Solution

The fourth proportional to 406,039.80, 608,573.70 and 169,260.60 is: 253,688.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,039.80 : 608,573.70 = 169,260.60 : x
  2. Step 2: Convert to fraction form
    406,039.80/608,573.70 = 169,260.60/x
  3. Step 3: Cross multiply
    406,039.80x = 608,573.70 × 169,260.60
  4. Step 4: Simplify right side
    406,039.80x = 103,007,549,606.22
  5. Step 5: Solve for x
    x = 103,007,549,606.22/406,039.80
  6. Step 6: Final answer
    x = 253,688.31

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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.