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Finding the Fourth Proportional to 619,505.60, 929,039.70 and 220,159.40

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Solution

The fourth proportional to 619,505.60, 929,039.70 and 220,159.40 is: 330,161.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,505.60 : 929,039.70 = 220,159.40 : x
  2. Step 2: Convert to fraction form
    619,505.60/929,039.70 = 220,159.40/x
  3. Step 3: Cross multiply
    619,505.60x = 929,039.70 × 220,159.40
  4. Step 4: Simplify right side
    619,505.60x = 204,536,822,928.18
  5. Step 5: Solve for x
    x = 204,536,822,928.18/619,505.60
  6. Step 6: Final answer
    x = 330,161.38

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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.