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Finding the Fourth Proportional to 412,098.68, 618,236.83 and 127,783.51

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Solution

The fourth proportional to 412,098.68, 618,236.83 and 127,783.51 is: 191,702.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,098.68 : 618,236.83 = 127,783.51 : x
  2. Step 2: Convert to fraction form
    412,098.68/618,236.83 = 127,783.51/x
  3. Step 3: Cross multiply
    412,098.68x = 618,236.83 × 127,783.51
  4. Step 4: Simplify right side
    412,098.68x = 79,000,472,148.67
  5. Step 5: Solve for x
    x = 79,000,472,148.67/412,098.68
  6. Step 6: Final answer
    x = 191,702.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.