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Finding the Fourth Proportional to 356,923.80, 535,434.93 and 207,234.59

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Solution

The fourth proportional to 356,923.80, 535,434.93 and 207,234.59 is: 310,880.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,923.80 : 535,434.93 = 207,234.59 : x
  2. Step 2: Convert to fraction form
    356,923.80/535,434.93 = 207,234.59/x
  3. Step 3: Cross multiply
    356,923.80x = 535,434.93 × 207,234.59
  4. Step 4: Simplify right side
    356,923.80x = 110,960,635,513.05
  5. Step 5: Solve for x
    x = 110,960,635,513.05/356,923.80
  6. Step 6: Final answer
    x = 310,880.46

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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.