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Finding the Fourth Proportional to 539,186.10, 744,069.78 and 297,478.86

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Solution

The fourth proportional to 539,186.10, 744,069.78 and 297,478.86 is: 410,516.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,186.10 : 744,069.78 = 297,478.86 : x
  2. Step 2: Convert to fraction form
    539,186.10/744,069.78 = 297,478.86/x
  3. Step 3: Cross multiply
    539,186.10x = 744,069.78 × 297,478.86
  4. Step 4: Simplify right side
    539,186.10x = 221,345,029,914.85
  5. Step 5: Solve for x
    x = 221,345,029,914.85/539,186.10
  6. Step 6: Final answer
    x = 410,516.94

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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.