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Finding the Fourth Proportional to 508,462.48, 701,688.94 and 279,017.76

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Solution

The fourth proportional to 508,462.48, 701,688.94 and 279,017.76 is: 385,050.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,462.48 : 701,688.94 = 279,017.76 : x
  2. Step 2: Convert to fraction form
    508,462.48/701,688.94 = 279,017.76/x
  3. Step 3: Cross multiply
    508,462.48x = 701,688.94 × 279,017.76
  4. Step 4: Simplify right side
    508,462.48x = 195,783,676,255.57
  5. Step 5: Solve for x
    x = 195,783,676,255.57/508,462.48
  6. Step 6: Final answer
    x = 385,050.39

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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.