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Finding the Fourth Proportional to 287,561.86, 396,836.93 and 166,774.76

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Solution

The fourth proportional to 287,561.86, 396,836.93 and 166,774.76 is: 230,150.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,561.86 : 396,836.93 = 166,774.76 : x
  2. Step 2: Convert to fraction form
    287,561.86/396,836.93 = 166,774.76/x
  3. Step 3: Cross multiply
    287,561.86x = 396,836.93 × 166,774.76
  4. Step 4: Simplify right side
    287,561.86x = 66,182,382,192.64
  5. Step 5: Solve for x
    x = 66,182,382,192.64/287,561.86
  6. Step 6: Final answer
    x = 230,150.07

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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.