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Finding the Fourth Proportional to 125,411.84, 173,070.72 and 68,827.52

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Solution

The fourth proportional to 125,411.84, 173,070.72 and 68,827.52 is: 94,983.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,411.84 : 173,070.72 = 68,827.52 : x
  2. Step 2: Convert to fraction form
    125,411.84/173,070.72 = 68,827.52/x
  3. Step 3: Cross multiply
    125,411.84x = 173,070.72 × 68,827.52
  4. Step 4: Simplify right side
    125,411.84x = 11,912,028,442.21
  5. Step 5: Solve for x
    x = 11,912,028,442.21/125,411.84
  6. Step 6: Final answer
    x = 94,983.28

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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.