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Finding the Fourth Proportional to 633,988.94, 874,994.37 and 392,349.38

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Solution

The fourth proportional to 633,988.94, 874,994.37 and 392,349.38 is: 541,497.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,988.94 : 874,994.37 = 392,349.38 : x
  2. Step 2: Convert to fraction form
    633,988.94/874,994.37 = 392,349.38/x
  3. Step 3: Cross multiply
    633,988.94x = 874,994.37 × 392,349.38
  4. Step 4: Simplify right side
    633,988.94x = 343,303,498,572.99
  5. Step 5: Solve for x
    x = 343,303,498,572.99/633,988.94
  6. Step 6: Final answer
    x = 541,497.61

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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.