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Finding the Fourth Proportional to 287,575.66, 396,807.74 and 166,693.36

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Solution

The fourth proportional to 287,575.66, 396,807.74 and 166,693.36 is: 230,009.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,575.66 : 396,807.74 = 166,693.36 : x
  2. Step 2: Convert to fraction form
    287,575.66/396,807.74 = 166,693.36/x
  3. Step 3: Cross multiply
    287,575.66x = 396,807.74 × 166,693.36
  4. Step 4: Simplify right side
    287,575.66x = 66,145,215,454.61
  5. Step 5: Solve for x
    x = 66,145,215,454.61/287,575.66
  6. Step 6: Final answer
    x = 230,009.78

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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.