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Finding the Fourth Proportional to 92,399.61, 127,511.43 and 52,113.28

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Solution

The fourth proportional to 92,399.61, 127,511.43 and 52,113.28 is: 71,916.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,399.61 : 127,511.43 = 52,113.28 : x
  2. Step 2: Convert to fraction form
    92,399.61/127,511.43 = 52,113.28/x
  3. Step 3: Cross multiply
    92,399.61x = 127,511.43 × 52,113.28
  4. Step 4: Simplify right side
    92,399.61x = 6,645,038,854.79
  5. Step 5: Solve for x
    x = 6,645,038,854.79/92,399.61
  6. Step 6: Final answer
    x = 71,916.31

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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.