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Finding the Fourth Proportional to 125,833.79, 173,645.74 and 72,080.57

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Solution

The fourth proportional to 125,833.79, 173,645.74 and 72,080.57 is: 99,468.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,833.79 : 173,645.74 = 72,080.57 : x
  2. Step 2: Convert to fraction form
    125,833.79/173,645.74 = 72,080.57/x
  3. Step 3: Cross multiply
    125,833.79x = 173,645.74 × 72,080.57
  4. Step 4: Simplify right side
    125,833.79x = 12,516,484,441.49
  5. Step 5: Solve for x
    x = 12,516,484,441.49/125,833.79
  6. Step 6: Final answer
    x = 99,468.39

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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.