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Finding the Fourth Proportional to 328,501.40, 492,060.90 and 273,205.40

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Solution

The fourth proportional to 328,501.40, 492,060.90 and 273,205.40 is: 409,233.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,501.40 : 492,060.90 = 273,205.40 : x
  2. Step 2: Convert to fraction form
    328,501.40/492,060.90 = 273,205.40/x
  3. Step 3: Cross multiply
    328,501.40x = 492,060.90 × 273,205.40
  4. Step 4: Simplify right side
    328,501.40x = 134,433,695,008.86
  5. Step 5: Solve for x
    x = 134,433,695,008.86/328,501.40
  6. Step 6: Final answer
    x = 409,233.25

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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.