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Finding the Fourth Proportional to 638,089.83, 956,232.59 and 353,905.56

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Solution

The fourth proportional to 638,089.83, 956,232.59 and 353,905.56 is: 530,357.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,089.83 : 956,232.59 = 353,905.56 : x
  2. Step 2: Convert to fraction form
    638,089.83/956,232.59 = 353,905.56/x
  3. Step 3: Cross multiply
    638,089.83x = 956,232.59 × 353,905.56
  4. Step 4: Simplify right side
    638,089.83x = 338,416,028,484.67
  5. Step 5: Solve for x
    x = 338,416,028,484.67/638,089.83
  6. Step 6: Final answer
    x = 530,357.97

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1.5x scale

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.