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Finding the Fourth Proportional to 78,524.82, 117,790.47 and 25,934.22

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Solution

The fourth proportional to 78,524.82, 117,790.47 and 25,934.22 is: 38,902.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,524.82 : 117,790.47 = 25,934.22 : x
  2. Step 2: Convert to fraction form
    78,524.82/117,790.47 = 25,934.22/x
  3. Step 3: Cross multiply
    78,524.82x = 117,790.47 × 25,934.22
  4. Step 4: Simplify right side
    78,524.82x = 3,054,803,962.88
  5. Step 5: Solve for x
    x = 3,054,803,962.88/78,524.82
  6. Step 6: Final answer
    x = 38,902.40

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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.