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Finding the Fourth Proportional to 690,573.60, 953,138.61 and 464,087.88

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Solution

The fourth proportional to 690,573.60, 953,138.61 and 464,087.88 is: 640,540.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,573.60 : 953,138.61 = 464,087.88 : x
  2. Step 2: Convert to fraction form
    690,573.60/953,138.61 = 464,087.88/x
  3. Step 3: Cross multiply
    690,573.60x = 953,138.61 × 464,087.88
  4. Step 4: Simplify right side
    690,573.60x = 442,340,076,861.05
  5. Step 5: Solve for x
    x = 442,340,076,861.05/690,573.60
  6. Step 6: Final answer
    x = 640,540.09

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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.