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Finding the Fourth Proportional to 209,606.70, 314,381.70 and 83,339.85

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Solution

The fourth proportional to 209,606.70, 314,381.70 and 83,339.85 is: 124,998.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,606.70 : 314,381.70 = 83,339.85 : x
  2. Step 2: Convert to fraction form
    209,606.70/314,381.70 = 83,339.85/x
  3. Step 3: Cross multiply
    209,606.70x = 314,381.70 × 83,339.85
  4. Step 4: Simplify right side
    209,606.70x = 26,200,523,720.75
  5. Step 5: Solve for x
    x = 26,200,523,720.75/209,606.70
  6. Step 6: Final answer
    x = 124,998.50

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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.