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Finding the Fourth Proportional to 539,520.76, 744,538.69 and 297,803.40

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Solution

The fourth proportional to 539,520.76, 744,538.69 and 297,803.40 is: 410,968.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,520.76 : 744,538.69 = 297,803.40 : x
  2. Step 2: Convert to fraction form
    539,520.76/744,538.69 = 297,803.40/x
  3. Step 3: Cross multiply
    539,520.76x = 744,538.69 × 297,803.40
  4. Step 4: Simplify right side
    539,520.76x = 221,726,149,590.85
  5. Step 5: Solve for x
    x = 221,726,149,590.85/539,520.76
  6. Step 6: Final answer
    x = 410,968.71

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Double scale
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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.