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Finding the Fourth Proportional to 434,045.20, 650,849.10 and 256,606.60

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Solution

The fourth proportional to 434,045.20, 650,849.10 and 256,606.60 is: 384,780.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,045.20 : 650,849.10 = 256,606.60 : x
  2. Step 2: Convert to fraction form
    434,045.20/650,849.10 = 256,606.60/x
  3. Step 3: Cross multiply
    434,045.20x = 650,849.10 × 256,606.60
  4. Step 4: Simplify right side
    434,045.20x = 167,012,174,664.06
  5. Step 5: Solve for x
    x = 167,012,174,664.06/434,045.20
  6. Step 6: Final answer
    x = 384,780.61

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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.