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Finding the Fourth Proportional to 662,939.79, 914,832.72 and 405,248.32

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Solution

The fourth proportional to 662,939.79, 914,832.72 and 405,248.32 is: 559,227.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,939.79 : 914,832.72 = 405,248.32 : x
  2. Step 2: Convert to fraction form
    662,939.79/914,832.72 = 405,248.32/x
  3. Step 3: Cross multiply
    662,939.79x = 914,832.72 × 405,248.32
  4. Step 4: Simplify right side
    662,939.79x = 370,734,422,861.03
  5. Step 5: Solve for x
    x = 370,734,422,861.03/662,939.79
  6. Step 6: Final answer
    x = 559,227.89

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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.