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Finding the Fourth Proportional to 125,038.46, 172,553.07 and 68,449.83

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Solution

The fourth proportional to 125,038.46, 172,553.07 and 68,449.83 is: 94,460.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,038.46 : 172,553.07 = 68,449.83 : x
  2. Step 2: Convert to fraction form
    125,038.46/172,553.07 = 68,449.83/x
  3. Step 3: Cross multiply
    125,038.46x = 172,553.07 × 68,449.83
  4. Step 4: Simplify right side
    125,038.46x = 11,811,228,307.48
  5. Step 5: Solve for x
    x = 11,811,228,307.48/125,038.46
  6. Step 6: Final answer
    x = 94,460.77

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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.