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Finding the Fourth Proportional to 372,408.21, 558,613.53 and 91,925.46

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Solution

The fourth proportional to 372,408.21, 558,613.53 and 91,925.46 is: 137,888.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,408.21 : 558,613.53 = 91,925.46 : x
  2. Step 2: Convert to fraction form
    372,408.21/558,613.53 = 91,925.46/x
  3. Step 3: Cross multiply
    372,408.21x = 558,613.53 × 91,925.46
  4. Step 4: Simplify right side
    372,408.21x = 51,350,805,707.47
  5. Step 5: Solve for x
    x = 51,350,805,707.47/372,408.21
  6. Step 6: Final answer
    x = 137,888.49

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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.