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Finding the Fourth Proportional to 125,339.15, 173,079.23 and 85,202.23

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Solution

The fourth proportional to 125,339.15, 173,079.23 and 85,202.23 is: 117,654.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,339.15 : 173,079.23 = 85,202.23 : x
  2. Step 2: Convert to fraction form
    125,339.15/173,079.23 = 85,202.23/x
  3. Step 3: Cross multiply
    125,339.15x = 173,079.23 × 85,202.23
  4. Step 4: Simplify right side
    125,339.15x = 14,746,736,362.68
  5. Step 5: Solve for x
    x = 14,746,736,362.68/125,339.15
  6. Step 6: Final answer
    x = 117,654.67

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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.