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Finding the Fourth Proportional to 287,357.59, 396,505.97 and 174,180.34

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Solution

The fourth proportional to 287,357.59, 396,505.97 and 174,180.34 is: 240,340.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,357.59 : 396,505.97 = 174,180.34 : x
  2. Step 2: Convert to fraction form
    287,357.59/396,505.97 = 174,180.34/x
  3. Step 3: Cross multiply
    287,357.59x = 396,505.97 × 174,180.34
  4. Step 4: Simplify right side
    287,357.59x = 69,063,544,944.54
  5. Step 5: Solve for x
    x = 69,063,544,944.54/287,357.59
  6. Step 6: Final answer
    x = 240,340.07

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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.