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Finding the Fourth Proportional to 312,536.01, 431,290.83 and 183,472.42

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Solution

The fourth proportional to 312,536.01, 431,290.83 and 183,472.42 is: 253,186.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,536.01 : 431,290.83 = 183,472.42 : x
  2. Step 2: Convert to fraction form
    312,536.01/431,290.83 = 183,472.42/x
  3. Step 3: Cross multiply
    312,536.01x = 431,290.83 × 183,472.42
  4. Step 4: Simplify right side
    312,536.01x = 79,129,971,845.23
  5. Step 5: Solve for x
    x = 79,129,971,845.23/312,536.01
  6. Step 6: Final answer
    x = 253,186.73

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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.