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Finding the Fourth Proportional to 168,407.82, 232,396.95 and 100,389.69

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Solution

The fourth proportional to 168,407.82, 232,396.95 and 100,389.69 is: 138,534.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,407.82 : 232,396.95 = 100,389.69 : x
  2. Step 2: Convert to fraction form
    168,407.82/232,396.95 = 100,389.69/x
  3. Step 3: Cross multiply
    168,407.82x = 232,396.95 × 100,389.69
  4. Step 4: Simplify right side
    168,407.82x = 23,330,257,767.45
  5. Step 5: Solve for x
    x = 23,330,257,767.45/168,407.82
  6. Step 6: Final answer
    x = 138,534.29

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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.