Home / 208,715.89-313,124.79-66,561.19

Finding the Fourth Proportional to 208,715.89, 313,124.79 and 66,561.19

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Solution

The fourth proportional to 208,715.89, 313,124.79 and 66,561.19 is: 99,858.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,715.89 : 313,124.79 = 66,561.19 : x
  2. Step 2: Convert to fraction form
    208,715.89/313,124.79 = 66,561.19/x
  3. Step 3: Cross multiply
    208,715.89x = 313,124.79 × 66,561.19
  4. Step 4: Simplify right side
    208,715.89x = 20,841,958,640.90
  5. Step 5: Solve for x
    x = 20,841,958,640.90/208,715.89
  6. Step 6: Final answer
    x = 99,858.03

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1.5x scale

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.