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Finding the Fourth Proportional to 289,685.70, 434,528.55 and 195,207.30

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Solution

The fourth proportional to 289,685.70, 434,528.55 and 195,207.30 is: 292,810.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,685.70 : 434,528.55 = 195,207.30 : x
  2. Step 2: Convert to fraction form
    289,685.70/434,528.55 = 195,207.30/x
  3. Step 3: Cross multiply
    289,685.70x = 434,528.55 × 195,207.30
  4. Step 4: Simplify right side
    289,685.70x = 84,823,145,018.42
  5. Step 5: Solve for x
    x = 84,823,145,018.42/289,685.70
  6. Step 6: Final answer
    x = 292,810.95

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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.