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Finding the Fourth Proportional to 209,369.84, 288,835.08 and 124,438.64

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Solution

The fourth proportional to 209,369.84, 288,835.08 and 124,438.64 is: 171,668.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,369.84 : 288,835.08 = 124,438.64 : x
  2. Step 2: Convert to fraction form
    209,369.84/288,835.08 = 124,438.64/x
  3. Step 3: Cross multiply
    209,369.84x = 288,835.08 × 124,438.64
  4. Step 4: Simplify right side
    209,369.84x = 35,942,244,539.49
  5. Step 5: Solve for x
    x = 35,942,244,539.49/209,369.84
  6. Step 6: Final answer
    x = 171,668.68

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1.5x scale

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.