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Finding the Fourth Proportional to 210,445.70, 315,715.19 and 60,674.30

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Solution

The fourth proportional to 210,445.70, 315,715.19 and 60,674.30 is: 91,024.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,445.70 : 315,715.19 = 60,674.30 : x
  2. Step 2: Convert to fraction form
    210,445.70/315,715.19 = 60,674.30/x
  3. Step 3: Cross multiply
    210,445.70x = 315,715.19 × 60,674.30
  4. Step 4: Simplify right side
    210,445.70x = 19,155,797,849.25
  5. Step 5: Solve for x
    x = 19,155,797,849.25/210,445.70
  6. Step 6: Final answer
    x = 91,024.90

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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.