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Finding the Fourth Proportional to 289,860.28, 434,790.66 and 233,435.80

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Solution

The fourth proportional to 289,860.28, 434,790.66 and 233,435.80 is: 350,153.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,860.28 : 434,790.66 = 233,435.80 : x
  2. Step 2: Convert to fraction form
    289,860.28/434,790.66 = 233,435.80/x
  3. Step 3: Cross multiply
    289,860.28x = 434,790.66 × 233,435.80
  4. Step 4: Simplify right side
    289,860.28x = 101,495,705,549.63
  5. Step 5: Solve for x
    x = 101,495,705,549.63/289,860.28
  6. Step 6: Final answer
    x = 350,153.89

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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.