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Finding the Fourth Proportional to 320,312.76, 441,993.15 and 177,053.19

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Solution

The fourth proportional to 320,312.76, 441,993.15 and 177,053.19 is: 244,312.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,312.76 : 441,993.15 = 177,053.19 : x
  2. Step 2: Convert to fraction form
    320,312.76/441,993.15 = 177,053.19/x
  3. Step 3: Cross multiply
    320,312.76x = 441,993.15 × 177,053.19
  4. Step 4: Simplify right side
    320,312.76x = 78,256,297,165.65
  5. Step 5: Solve for x
    x = 78,256,297,165.65/320,312.76
  6. Step 6: Final answer
    x = 244,312.14

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1.5x scale

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.