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Finding the Fourth Proportional to 434,354.64, 648,561.04 and 389,083.72

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Solution

The fourth proportional to 434,354.64, 648,561.04 and 389,083.72 is: 580,964.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,354.64 : 648,561.04 = 389,083.72 : x
  2. Step 2: Convert to fraction form
    434,354.64/648,561.04 = 389,083.72/x
  3. Step 3: Cross multiply
    434,354.64x = 648,561.04 × 389,083.72
  4. Step 4: Simplify right side
    434,354.64x = 252,344,542,090.27
  5. Step 5: Solve for x
    x = 252,344,542,090.27/434,354.64
  6. Step 6: Final answer
    x = 580,964.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.