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Finding the Fourth Proportional to 423,903.32, 635,953.46 and 124,371.80

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Solution

The fourth proportional to 423,903.32, 635,953.46 and 124,371.80 is: 186,586.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,903.32 : 635,953.46 = 124,371.80 : x
  2. Step 2: Convert to fraction form
    423,903.32/635,953.46 = 124,371.80/x
  3. Step 3: Cross multiply
    423,903.32x = 635,953.46 × 124,371.80
  4. Step 4: Simplify right side
    423,903.32x = 79,094,676,536.43
  5. Step 5: Solve for x
    x = 79,094,676,536.43/423,903.32
  6. Step 6: Final answer
    x = 186,586.59

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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.