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Finding the Fourth Proportional to 125,998.76, 173,675.58 and 85,150.10

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Solution

The fourth proportional to 125,998.76, 173,675.58 and 85,150.10 is: 117,370.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,998.76 : 173,675.58 = 85,150.10 : x
  2. Step 2: Convert to fraction form
    125,998.76/173,675.58 = 85,150.10/x
  3. Step 3: Cross multiply
    125,998.76x = 173,675.58 × 85,150.10
  4. Step 4: Simplify right side
    125,998.76x = 14,788,493,004.56
  5. Step 5: Solve for x
    x = 14,788,493,004.56/125,998.76
  6. Step 6: Final answer
    x = 117,370.15

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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.