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Finding the Fourth Proportional to 270,423.20, 405,596.40 and 92,938.40

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Solution

The fourth proportional to 270,423.20, 405,596.40 and 92,938.40 is: 139,394.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,423.20 : 405,596.40 = 92,938.40 : x
  2. Step 2: Convert to fraction form
    270,423.20/405,596.40 = 92,938.40/x
  3. Step 3: Cross multiply
    270,423.20x = 405,596.40 × 92,938.40
  4. Step 4: Simplify right side
    270,423.20x = 37,695,480,461.76
  5. Step 5: Solve for x
    x = 37,695,480,461.76/270,423.20
  6. Step 6: Final answer
    x = 139,394.40

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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.