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Finding the Fourth Proportional to 425,146.17, 586,743.11 and 317,529.34

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Solution

The fourth proportional to 425,146.17, 586,743.11 and 317,529.34 is: 438,221.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,146.17 : 586,743.11 = 317,529.34 : x
  2. Step 2: Convert to fraction form
    425,146.17/586,743.11 = 317,529.34/x
  3. Step 3: Cross multiply
    425,146.17x = 586,743.11 × 317,529.34
  4. Step 4: Simplify right side
    425,146.17x = 186,308,152,467.85
  5. Step 5: Solve for x
    x = 186,308,152,467.85/425,146.17
  6. Step 6: Final answer
    x = 438,221.41

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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.