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Finding the Fourth Proportional to 125,416.65, 173,025.71 and 71,672.83

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Solution

The fourth proportional to 125,416.65, 173,025.71 and 71,672.83 is: 98,880.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,416.65 : 173,025.71 = 71,672.83 : x
  2. Step 2: Convert to fraction form
    125,416.65/173,025.71 = 71,672.83/x
  3. Step 3: Cross multiply
    125,416.65x = 173,025.71 × 71,672.83
  4. Step 4: Simplify right side
    125,416.65x = 12,401,242,749.57
  5. Step 5: Solve for x
    x = 12,401,242,749.57/125,416.65
  6. Step 6: Final answer
    x = 98,880.36

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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.