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Finding the Fourth Proportional to 287,009.27, 430,610.72 and 127,063.12

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Solution

The fourth proportional to 287,009.27, 430,610.72 and 127,063.12 is: 190,637.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,009.27 : 430,610.72 = 127,063.12 : x
  2. Step 2: Convert to fraction form
    287,009.27/430,610.72 = 127,063.12/x
  3. Step 3: Cross multiply
    287,009.27x = 430,610.72 × 127,063.12
  4. Step 4: Simplify right side
    287,009.27x = 54,714,739,876.80
  5. Step 5: Solve for x
    x = 54,714,739,876.80/287,009.27
  6. Step 6: Final answer
    x = 190,637.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.