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Finding the Fourth Proportional to 355,856.80, 534,087.60 and 145,645.60

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Solution

The fourth proportional to 355,856.80, 534,087.60 and 145,645.60 is: 218,592.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,856.80 : 534,087.60 = 145,645.60 : x
  2. Step 2: Convert to fraction form
    355,856.80/534,087.60 = 145,645.60/x
  3. Step 3: Cross multiply
    355,856.80x = 534,087.60 × 145,645.60
  4. Step 4: Simplify right side
    355,856.80x = 77,787,508,954.56
  5. Step 5: Solve for x
    x = 77,787,508,954.56/355,856.80
  6. Step 6: Final answer
    x = 218,592.17

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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.