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Finding the Fourth Proportional to 426,681.74, 588,961.12 and 339,626.53

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Solution

The fourth proportional to 426,681.74, 588,961.12 and 339,626.53 is: 468,796.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,681.74 : 588,961.12 = 339,626.53 : x
  2. Step 2: Convert to fraction form
    426,681.74/588,961.12 = 339,626.53/x
  3. Step 3: Cross multiply
    426,681.74x = 588,961.12 × 339,626.53
  4. Step 4: Simplify right side
    426,681.74x = 200,026,818,545.71
  5. Step 5: Solve for x
    x = 200,026,818,545.71/426,681.74
  6. Step 6: Final answer
    x = 468,796.30

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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.