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Finding the Fourth Proportional to 315,798.64, 473,729.52 and 91,164.56

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Solution

The fourth proportional to 315,798.64, 473,729.52 and 91,164.56 is: 136,755.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,798.64 : 473,729.52 = 91,164.56 : x
  2. Step 2: Convert to fraction form
    315,798.64/473,729.52 = 91,164.56/x
  3. Step 3: Cross multiply
    315,798.64x = 473,729.52 × 91,164.56
  4. Step 4: Simplify right side
    315,798.64x = 43,187,343,249.81
  5. Step 5: Solve for x
    x = 43,187,343,249.81/315,798.64
  6. Step 6: Final answer
    x = 136,755.95

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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.