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Finding the Fourth Proportional to 406,576, 561,074.88 and 247,600

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Solution

The fourth proportional to 406,576, 561,074.88 and 247,600 is: 341,688

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,576 : 561,074.88 = 247,600 : x
  2. Step 2: Convert to fraction form
    406,576/561,074.88 = 247,600/x
  3. Step 3: Cross multiply
    406,576x = 561,074.88 × 247,600
  4. Step 4: Simplify right side
    406,576x = 138,922,140,288
  5. Step 5: Solve for x
    x = 138,922,140,288/406,576
  6. Step 6: Final answer
    x = 341,688

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.