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Finding the Fourth Proportional to 328,446.96, 453,379.62 and 255,705.72

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Solution

The fourth proportional to 328,446.96, 453,379.62 and 255,705.72 is: 352,969.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,446.96 : 453,379.62 = 255,705.72 : x
  2. Step 2: Convert to fraction form
    328,446.96/453,379.62 = 255,705.72/x
  3. Step 3: Cross multiply
    328,446.96x = 453,379.62 × 255,705.72
  4. Step 4: Simplify right side
    328,446.96x = 115,931,762,165.43
  5. Step 5: Solve for x
    x = 115,931,762,165.43/328,446.96
  6. Step 6: Final answer
    x = 352,969.51

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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.