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Finding the Fourth Proportional to 462,338.10, 638,021.59 and 255,605.61

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Solution

The fourth proportional to 462,338.10, 638,021.59 and 255,605.61 is: 352,732.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,338.10 : 638,021.59 = 255,605.61 : x
  2. Step 2: Convert to fraction form
    462,338.10/638,021.59 = 255,605.61/x
  3. Step 3: Cross multiply
    462,338.10x = 638,021.59 × 255,605.61
  4. Step 4: Simplify right side
    462,338.10x = 163,081,897,705.12
  5. Step 5: Solve for x
    x = 163,081,897,705.12/462,338.10
  6. Step 6: Final answer
    x = 352,732.98

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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.