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Finding the Fourth Proportional to 506,191.81, 698,559.28 and 279,851.89

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Solution

The fourth proportional to 506,191.81, 698,559.28 and 279,851.89 is: 386,203.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,191.81 : 698,559.28 = 279,851.89 : x
  2. Step 2: Convert to fraction form
    506,191.81/698,559.28 = 279,851.89/x
  3. Step 3: Cross multiply
    506,191.81x = 698,559.28 × 279,851.89
  4. Step 4: Simplify right side
    506,191.81x = 195,493,134,785.04
  5. Step 5: Solve for x
    x = 195,493,134,785.04/506,191.81
  6. Step 6: Final answer
    x = 386,203.67

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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.