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Finding the Fourth Proportional to 467,785.19, 645,709.46 and 276,798.13

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Solution

The fourth proportional to 467,785.19, 645,709.46 and 276,798.13 is: 382,079.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,785.19 : 645,709.46 = 276,798.13 : x
  2. Step 2: Convert to fraction form
    467,785.19/645,709.46 = 276,798.13/x
  3. Step 3: Cross multiply
    467,785.19x = 645,709.46 × 276,798.13
  4. Step 4: Simplify right side
    467,785.19x = 178,731,168,053.05
  5. Step 5: Solve for x
    x = 178,731,168,053.05/467,785.19
  6. Step 6: Final answer
    x = 382,079.58

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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.