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Finding the Fourth Proportional to 499,360.35, 689,120.40 and 269,917.17

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Solution

The fourth proportional to 499,360.35, 689,120.40 and 269,917.17 is: 372,487.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,360.35 : 689,120.40 = 269,917.17 : x
  2. Step 2: Convert to fraction form
    499,360.35/689,120.40 = 269,917.17/x
  3. Step 3: Cross multiply
    499,360.35x = 689,120.40 × 269,917.17
  4. Step 4: Simplify right side
    499,360.35x = 186,005,428,157.27
  5. Step 5: Solve for x
    x = 186,005,428,157.27/499,360.35
  6. Step 6: Final answer
    x = 372,487.38

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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.