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Finding the Fourth Proportional to 199,608.90, 299,498.40 and 104,911.80

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Solution

The fourth proportional to 199,608.90, 299,498.40 and 104,911.80 is: 157,412.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,608.90 : 299,498.40 = 104,911.80 : x
  2. Step 2: Convert to fraction form
    199,608.90/299,498.40 = 104,911.80/x
  3. Step 3: Cross multiply
    199,608.90x = 299,498.40 × 104,911.80
  4. Step 4: Simplify right side
    199,608.90x = 31,420,916,241.12
  5. Step 5: Solve for x
    x = 31,420,916,241.12/199,608.90
  6. Step 6: Final answer
    x = 157,412.40

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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.