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Finding the Fourth Proportional to 624,427.65, 861,499.62 and 406,536.84

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Solution

The fourth proportional to 624,427.65, 861,499.62 and 406,536.84 is: 560,883.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,427.65 : 861,499.62 = 406,536.84 : x
  2. Step 2: Convert to fraction form
    624,427.65/861,499.62 = 406,536.84/x
  3. Step 3: Cross multiply
    624,427.65x = 861,499.62 × 406,536.84
  4. Step 4: Simplify right side
    624,427.65x = 350,231,333,176.00
  5. Step 5: Solve for x
    x = 350,231,333,176.00/624,427.65
  6. Step 6: Final answer
    x = 560,883.77

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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.