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Finding the Fourth Proportional to 619,503.60, 929,036.70 and 220,157.40

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Solution

The fourth proportional to 619,503.60, 929,036.70 and 220,157.40 is: 330,158.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,503.60 : 929,036.70 = 220,157.40 : x
  2. Step 2: Convert to fraction form
    619,503.60/929,036.70 = 220,157.40/x
  3. Step 3: Cross multiply
    619,503.60x = 929,036.70 × 220,157.40
  4. Step 4: Simplify right side
    619,503.60x = 204,534,304,376.58
  5. Step 5: Solve for x
    x = 204,534,304,376.58/619,503.60
  6. Step 6: Final answer
    x = 330,158.38

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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.