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Finding the Fourth Proportional to 611,876.79, 844,340.48 and 353,770.31

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Solution

The fourth proportional to 611,876.79, 844,340.48 and 353,770.31 is: 488,174.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,876.79 : 844,340.48 = 353,770.31 : x
  2. Step 2: Convert to fraction form
    611,876.79/844,340.48 = 353,770.31/x
  3. Step 3: Cross multiply
    611,876.79x = 844,340.48 × 353,770.31
  4. Step 4: Simplify right side
    611,876.79x = 298,702,587,364.60
  5. Step 5: Solve for x
    x = 298,702,587,364.60/611,876.79
  6. Step 6: Final answer
    x = 488,174.40

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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.