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Finding the Fourth Proportional to 611,792.56, 917,820.03 and 256,601.86

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Solution

The fourth proportional to 611,792.56, 917,820.03 and 256,601.86 is: 384,957.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,792.56 : 917,820.03 = 256,601.86 : x
  2. Step 2: Convert to fraction form
    611,792.56/917,820.03 = 256,601.86/x
  3. Step 3: Cross multiply
    611,792.56x = 917,820.03 × 256,601.86
  4. Step 4: Simplify right side
    611,792.56x = 235,514,326,843.26
  5. Step 5: Solve for x
    x = 235,514,326,843.26/611,792.56
  6. Step 6: Final answer
    x = 384,957.81

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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.