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Finding the Fourth Proportional to 607,191.78, 837,573.40 and 392,331.86

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Solution

The fourth proportional to 607,191.78, 837,573.40 and 392,331.86 is: 541,191.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,191.78 : 837,573.40 = 392,331.86 : x
  2. Step 2: Convert to fraction form
    607,191.78/837,573.40 = 392,331.86/x
  3. Step 3: Cross multiply
    607,191.78x = 837,573.40 × 392,331.86
  4. Step 4: Simplify right side
    607,191.78x = 328,606,729,908.52
  5. Step 5: Solve for x
    x = 328,606,729,908.52/607,191.78
  6. Step 6: Final answer
    x = 541,191.01

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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.