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Finding the Fourth Proportional to 287,390.34, 396,598.41 and 166,601.57

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Solution

The fourth proportional to 287,390.34, 396,598.41 and 166,601.57 is: 229,910.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,390.34 : 396,598.41 = 166,601.57 : x
  2. Step 2: Convert to fraction form
    287,390.34/396,598.41 = 166,601.57/x
  3. Step 3: Cross multiply
    287,390.34x = 396,598.41 × 166,601.57
  4. Step 4: Simplify right side
    287,390.34x = 66,073,915,782.51
  5. Step 5: Solve for x
    x = 66,073,915,782.51/287,390.34
  6. Step 6: Final answer
    x = 229,910.01

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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.