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Finding the Fourth Proportional to 47,398.60, 65,406.76 and 26,176.20

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Solution

The fourth proportional to 47,398.60, 65,406.76 and 26,176.20 is: 36,121.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,398.60 : 65,406.76 = 26,176.20 : x
  2. Step 2: Convert to fraction form
    47,398.60/65,406.76 = 26,176.20/x
  3. Step 3: Cross multiply
    47,398.60x = 65,406.76 × 26,176.20
  4. Step 4: Simplify right side
    47,398.60x = 1,712,100,431.11
  5. Step 5: Solve for x
    x = 1,712,100,431.11/47,398.60
  6. Step 6: Final answer
    x = 36,121.33

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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.