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Finding the Fourth Proportional to 289,500.71, 434,401.08 and 193,505.08

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Solution

The fourth proportional to 289,500.71, 434,401.08 and 193,505.08 is: 290,357.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,500.71 : 434,401.08 = 193,505.08 : x
  2. Step 2: Convert to fraction form
    289,500.71/434,401.08 = 193,505.08/x
  3. Step 3: Cross multiply
    289,500.71x = 434,401.08 × 193,505.08
  4. Step 4: Simplify right side
    289,500.71x = 84,058,813,518.59
  5. Step 5: Solve for x
    x = 84,058,813,518.59/289,500.71
  6. Step 6: Final answer
    x = 290,357.89

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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.