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Finding the Fourth Proportional to 315,672.44, 473,578.62 and 91,015.34

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Solution

The fourth proportional to 315,672.44, 473,578.62 and 91,015.34 is: 136,543.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,672.44 : 473,578.62 = 91,015.34 : x
  2. Step 2: Convert to fraction form
    315,672.44/473,578.62 = 91,015.34/x
  3. Step 3: Cross multiply
    315,672.44x = 473,578.62 × 91,015.34
  4. Step 4: Simplify right side
    315,672.44x = 43,102,916,748.14
  5. Step 5: Solve for x
    x = 43,102,916,748.14/315,672.44
  6. Step 6: Final answer
    x = 136,543.18

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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.