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Finding the Fourth Proportional to 636,873.54, 878,885.43 and 350,387.47

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Solution

The fourth proportional to 636,873.54, 878,885.43 and 350,387.47 is: 483,534.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,873.54 : 878,885.43 = 350,387.47 : x
  2. Step 2: Convert to fraction form
    636,873.54/878,885.43 = 350,387.47/x
  3. Step 3: Cross multiply
    636,873.54x = 878,885.43 × 350,387.47
  4. Step 4: Simplify right side
    636,873.54x = 307,950,442,237.56
  5. Step 5: Solve for x
    x = 307,950,442,237.56/636,873.54
  6. Step 6: Final answer
    x = 483,534.68

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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.