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Finding the Fourth Proportional to 84,903.12, 117,161.16 and 47,176.08

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Solution

The fourth proportional to 84,903.12, 117,161.16 and 47,176.08 is: 65,100.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,903.12 : 117,161.16 = 47,176.08 : x
  2. Step 2: Convert to fraction form
    84,903.12/117,161.16 = 47,176.08/x
  3. Step 3: Cross multiply
    84,903.12x = 117,161.16 × 47,176.08
  4. Step 4: Simplify right side
    84,903.12x = 5,527,204,257.05
  5. Step 5: Solve for x
    x = 5,527,204,257.05/84,903.12
  6. Step 6: Final answer
    x = 65,100.13

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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.