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Finding the Fourth Proportional to 395,350.40, 545,360.78 and 250,111.13

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Solution

The fourth proportional to 395,350.40, 545,360.78 and 250,111.13 is: 345,012.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,350.40 : 545,360.78 = 250,111.13 : x
  2. Step 2: Convert to fraction form
    395,350.40/545,360.78 = 250,111.13/x
  3. Step 3: Cross multiply
    395,350.40x = 545,360.78 × 250,111.13
  4. Step 4: Simplify right side
    395,350.40x = 136,400,798,841.96
  5. Step 5: Solve for x
    x = 136,400,798,841.96/395,350.40
  6. Step 6: Final answer
    x = 345,012.42

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1.5x scale

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.