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Finding the Fourth Proportional to 502,488.76, 693,434.48 and 276,134.26

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Solution

The fourth proportional to 502,488.76, 693,434.48 and 276,134.26 is: 381,065.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,488.76 : 693,434.48 = 276,134.26 : x
  2. Step 2: Convert to fraction form
    502,488.76/693,434.48 = 276,134.26/x
  3. Step 3: Cross multiply
    502,488.76x = 693,434.48 × 276,134.26
  4. Step 4: Simplify right side
    502,488.76x = 191,481,016,993.29
  5. Step 5: Solve for x
    x = 191,481,016,993.29/502,488.76
  6. Step 6: Final answer
    x = 381,065.27

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Double scale
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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.