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Finding the Fourth Proportional to 618,998.92, 854,253.74 and 347,053.64

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Solution

The fourth proportional to 618,998.92, 854,253.74 and 347,053.64 is: 478,953.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,998.92 : 854,253.74 = 347,053.64 : x
  2. Step 2: Convert to fraction form
    618,998.92/854,253.74 = 347,053.64/x
  3. Step 3: Cross multiply
    618,998.92x = 854,253.74 × 347,053.64
  4. Step 4: Simplify right side
    618,998.92x = 296,471,867,485.44
  5. Step 5: Solve for x
    x = 296,471,867,485.44/618,998.92
  6. Step 6: Final answer
    x = 478,953.77

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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.