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Finding the Fourth Proportional to 292,908.91, 439,359.26 and 115,417.46

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Solution

The fourth proportional to 292,908.91, 439,359.26 and 115,417.46 is: 173,124.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,908.91 : 439,359.26 = 115,417.46 : x
  2. Step 2: Convert to fraction form
    292,908.91/439,359.26 = 115,417.46/x
  3. Step 3: Cross multiply
    292,908.91x = 439,359.26 × 115,417.46
  4. Step 4: Simplify right side
    292,908.91x = 50,709,728,840.43
  5. Step 5: Solve for x
    x = 50,709,728,840.43/292,908.91
  6. Step 6: Final answer
    x = 173,124.57

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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.