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Finding the Fourth Proportional to 312,444.89, 431,051.85 and 181,600.77

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Solution

The fourth proportional to 312,444.89, 431,051.85 and 181,600.77 is: 250,538.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,444.89 : 431,051.85 = 181,600.77 : x
  2. Step 2: Convert to fraction form
    312,444.89/431,051.85 = 181,600.77/x
  3. Step 3: Cross multiply
    312,444.89x = 431,051.85 × 181,600.77
  4. Step 4: Simplify right side
    312,444.89x = 78,279,347,869.92
  5. Step 5: Solve for x
    x = 78,279,347,869.92/312,444.89
  6. Step 6: Final answer
    x = 250,538.10

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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.