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Finding the Fourth Proportional to 92,154.05, 138,205.32 and 25,578.32

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Solution

The fourth proportional to 92,154.05, 138,205.32 and 25,578.32 is: 38,360.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,154.05 : 138,205.32 = 25,578.32 : x
  2. Step 2: Convert to fraction form
    92,154.05/138,205.32 = 25,578.32/x
  3. Step 3: Cross multiply
    92,154.05x = 138,205.32 × 25,578.32
  4. Step 4: Simplify right side
    92,154.05x = 3,535,059,900.66
  5. Step 5: Solve for x
    x = 3,535,059,900.66/92,154.05
  6. Step 6: Final answer
    x = 38,360.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.