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Finding the Fourth Proportional to 373,667.19, 515,430.57 and 266,271.92

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Solution

The fourth proportional to 373,667.19, 515,430.57 and 266,271.92 is: 367,291.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,667.19 : 515,430.57 = 266,271.92 : x
  2. Step 2: Convert to fraction form
    373,667.19/515,430.57 = 266,271.92/x
  3. Step 3: Cross multiply
    373,667.19x = 515,430.57 × 266,271.92
  4. Step 4: Simplify right side
    373,667.19x = 137,244,687,500.59
  5. Step 5: Solve for x
    x = 137,244,687,500.59/373,667.19
  6. Step 6: Final answer
    x = 367,291.25

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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.