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Finding the Fourth Proportional to 569,790.20, 786,301.23 and 311,664.89

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Solution

The fourth proportional to 569,790.20, 786,301.23 and 311,664.89 is: 430,092.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,790.20 : 786,301.23 = 311,664.89 : x
  2. Step 2: Convert to fraction form
    569,790.20/786,301.23 = 311,664.89/x
  3. Step 3: Cross multiply
    569,790.20x = 786,301.23 × 311,664.89
  4. Step 4: Simplify right side
    569,790.20x = 245,062,484,796.49
  5. Step 5: Solve for x
    x = 245,062,484,796.49/569,790.20
  6. Step 6: Final answer
    x = 430,092.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.