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Finding the Fourth Proportional to 289,853.20, 434,779.80 and 256,610.80

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Solution

The fourth proportional to 289,853.20, 434,779.80 and 256,610.80 is: 384,916.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,853.20 : 434,779.80 = 256,610.80 : x
  2. Step 2: Convert to fraction form
    289,853.20/434,779.80 = 256,610.80/x
  3. Step 3: Cross multiply
    289,853.20x = 434,779.80 × 256,610.80
  4. Step 4: Simplify right side
    289,853.20x = 111,569,192,301.84
  5. Step 5: Solve for x
    x = 111,569,192,301.84/289,853.20
  6. Step 6: Final answer
    x = 384,916.20

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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.