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Finding the Fourth Proportional to 125,043.97, 172,560.69 and 68,455.35

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Solution

The fourth proportional to 125,043.97, 172,560.69 and 68,455.35 is: 94,468.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,043.97 : 172,560.69 = 68,455.35 : x
  2. Step 2: Convert to fraction form
    125,043.97/172,560.69 = 68,455.35/x
  3. Step 3: Cross multiply
    125,043.97x = 172,560.69 × 68,455.35
  4. Step 4: Simplify right side
    125,043.97x = 11,812,701,567.39
  5. Step 5: Solve for x
    x = 11,812,701,567.39/125,043.97
  6. Step 6: Final answer
    x = 94,468.38

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1.5x scale

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.