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Finding the Fourth Proportional to 443,374.45, 611,637.51 and 261,998.62

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Solution

The fourth proportional to 443,374.45, 611,637.51 and 261,998.62 is: 361,428.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,374.45 : 611,637.51 = 261,998.62 : x
  2. Step 2: Convert to fraction form
    443,374.45/611,637.51 = 261,998.62/x
  3. Step 3: Cross multiply
    443,374.45x = 611,637.51 × 261,998.62
  4. Step 4: Simplify right side
    443,374.45x = 160,248,183,560.24
  5. Step 5: Solve for x
    x = 160,248,183,560.24/443,374.45
  6. Step 6: Final answer
    x = 361,428.55

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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.