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Finding the Fourth Proportional to 92,359.71, 138,339.04 and 56,712.82

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Solution

The fourth proportional to 92,359.71, 138,339.04 and 56,712.82 is: 84,946.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,359.71 : 138,339.04 = 56,712.82 : x
  2. Step 2: Convert to fraction form
    92,359.71/138,339.04 = 56,712.82/x
  3. Step 3: Cross multiply
    92,359.71x = 138,339.04 × 56,712.82
  4. Step 4: Simplify right side
    92,359.71x = 7,845,597,074.49
  5. Step 5: Solve for x
    x = 7,845,597,074.49/92,359.71
  6. Step 6: Final answer
    x = 84,946.10

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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.