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Finding the Fourth Proportional to 611,793.06, 917,820.78 and 256,602.36

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Solution

The fourth proportional to 611,793.06, 917,820.78 and 256,602.36 is: 384,958.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,793.06 : 917,820.78 = 256,602.36 : x
  2. Step 2: Convert to fraction form
    611,793.06/917,820.78 = 256,602.36/x
  3. Step 3: Cross multiply
    611,793.06x = 917,820.78 × 256,602.36
  4. Step 4: Simplify right side
    611,793.06x = 235,514,978,205.04
  5. Step 5: Solve for x
    x = 235,514,978,205.04/611,793.06
  6. Step 6: Final answer
    x = 384,958.56

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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.