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Finding the Fourth Proportional to 287,566.16, 396,842.87 and 166,779.05

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Solution

The fourth proportional to 287,566.16, 396,842.87 and 166,779.05 is: 230,156.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,566.16 : 396,842.87 = 166,779.05 : x
  2. Step 2: Convert to fraction form
    287,566.16/396,842.87 = 166,779.05/x
  3. Step 3: Cross multiply
    287,566.16x = 396,842.87 × 166,779.05
  4. Step 4: Simplify right side
    287,566.16x = 66,185,076,857.87
  5. Step 5: Solve for x
    x = 66,185,076,857.87/287,566.16
  6. Step 6: Final answer
    x = 230,156.00

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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.