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Finding the Fourth Proportional to 425,266.12, 637,900.06 and 399,284.52

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Solution

The fourth proportional to 425,266.12, 637,900.06 and 399,284.52 is: 598,927.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,266.12 : 637,900.06 = 399,284.52 : x
  2. Step 2: Convert to fraction form
    425,266.12/637,900.06 = 399,284.52/x
  3. Step 3: Cross multiply
    425,266.12x = 637,900.06 × 399,284.52
  4. Step 4: Simplify right side
    425,266.12x = 254,703,619,265.07
  5. Step 5: Solve for x
    x = 254,703,619,265.07/425,266.12
  6. Step 6: Final answer
    x = 598,927.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.