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Finding the Fourth Proportional to 262,403.60, 393,605.40 and 223,134.80

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Solution

The fourth proportional to 262,403.60, 393,605.40 and 223,134.80 is: 334,702.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,403.60 : 393,605.40 = 223,134.80 : x
  2. Step 2: Convert to fraction form
    262,403.60/393,605.40 = 223,134.80/x
  3. Step 3: Cross multiply
    262,403.60x = 393,605.40 × 223,134.80
  4. Step 4: Simplify right side
    262,403.60x = 87,827,062,207.92
  5. Step 5: Solve for x
    x = 87,827,062,207.92/262,403.60
  6. Step 6: Final answer
    x = 334,702.20

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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.