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Finding the Fourth Proportional to 296,667.81, 445,014.05 and 86,305.77

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Solution

The fourth proportional to 296,667.81, 445,014.05 and 86,305.77 is: 129,462.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,667.81 : 445,014.05 = 86,305.77 : x
  2. Step 2: Convert to fraction form
    296,667.81/445,014.05 = 86,305.77/x
  3. Step 3: Cross multiply
    296,667.81x = 445,014.05 × 86,305.77
  4. Step 4: Simplify right side
    296,667.81x = 38,407,279,814.54
  5. Step 5: Solve for x
    x = 38,407,279,814.54/296,667.81
  6. Step 6: Final answer
    x = 129,462.24

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1.5x scale

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.