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Finding the Fourth Proportional to 505,914.24, 698,139.24 and 279,554.88

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Solution

The fourth proportional to 505,914.24, 698,139.24 and 279,554.88 is: 385,773.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,914.24 : 698,139.24 = 279,554.88 : x
  2. Step 2: Convert to fraction form
    505,914.24/698,139.24 = 279,554.88/x
  3. Step 3: Cross multiply
    505,914.24x = 698,139.24 × 279,554.88
  4. Step 4: Simplify right side
    505,914.24x = 195,168,231,461.49
  5. Step 5: Solve for x
    x = 195,168,231,461.49/505,914.24
  6. Step 6: Final answer
    x = 385,773.35

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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.