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Finding the Fourth Proportional to 538,560.78, 743,210.64 and 293,545.20

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Solution

The fourth proportional to 538,560.78, 743,210.64 and 293,545.20 is: 405,090.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,560.78 : 743,210.64 = 293,545.20 : x
  2. Step 2: Convert to fraction form
    538,560.78/743,210.64 = 293,545.20/x
  3. Step 3: Cross multiply
    538,560.78x = 743,210.64 × 293,545.20
  4. Step 4: Simplify right side
    538,560.78x = 218,165,915,960.93
  5. Step 5: Solve for x
    x = 218,165,915,960.93/538,560.78
  6. Step 6: Final answer
    x = 405,090.61

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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.