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Finding the Fourth Proportional to 393,555.70, 590,333.55 and 156,934.90

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Solution

The fourth proportional to 393,555.70, 590,333.55 and 156,934.90 is: 235,402.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,555.70 : 590,333.55 = 156,934.90 : x
  2. Step 2: Convert to fraction form
    393,555.70/590,333.55 = 156,934.90/x
  3. Step 3: Cross multiply
    393,555.70x = 590,333.55 × 156,934.90
  4. Step 4: Simplify right side
    393,555.70x = 92,643,936,635.90
  5. Step 5: Solve for x
    x = 92,643,936,635.90/393,555.70
  6. Step 6: Final answer
    x = 235,402.35

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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.