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Finding the Fourth Proportional to 292,628.56, 438,959.04 and 92,934.40

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Solution

The fourth proportional to 292,628.56, 438,959.04 and 92,934.40 is: 139,406.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,628.56 : 438,959.04 = 92,934.40 : x
  2. Step 2: Convert to fraction form
    292,628.56/438,959.04 = 92,934.40/x
  3. Step 3: Cross multiply
    292,628.56x = 438,959.04 × 92,934.40
  4. Step 4: Simplify right side
    292,628.56x = 40,794,395,006.98
  5. Step 5: Solve for x
    x = 40,794,395,006.98/292,628.56
  6. Step 6: Final answer
    x = 139,406.74

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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.