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Finding the Fourth Proportional to 350,909.47, 525,338.74 and 261,349.39

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Solution

The fourth proportional to 350,909.47, 525,338.74 and 261,349.39 is: 391,260.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,909.47 : 525,338.74 = 261,349.39 : x
  2. Step 2: Convert to fraction form
    350,909.47/525,338.74 = 261,349.39/x
  3. Step 3: Cross multiply
    350,909.47x = 525,338.74 × 261,349.39
  4. Step 4: Simplify right side
    350,909.47x = 137,296,959,242.37
  5. Step 5: Solve for x
    x = 137,296,959,242.37/350,909.47
  6. Step 6: Final answer
    x = 391,260.34

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1.5x scale

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.