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Finding the Fourth Proportional to 289,365.30, 433,902.15 and 171,072.90

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Solution

The fourth proportional to 289,365.30, 433,902.15 and 171,072.90 is: 256,523.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,365.30 : 433,902.15 = 171,072.90 : x
  2. Step 2: Convert to fraction form
    289,365.30/433,902.15 = 171,072.90/x
  3. Step 3: Cross multiply
    289,365.30x = 433,902.15 × 171,072.90
  4. Step 4: Simplify right side
    289,365.30x = 74,228,899,116.74
  5. Step 5: Solve for x
    x = 74,228,899,116.74/289,365.30
  6. Step 6: Final answer
    x = 256,523.15

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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.