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Finding the Fourth Proportional to 86,103.74, 118,793.78 and 53,816.34

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Solution

The fourth proportional to 86,103.74, 118,793.78 and 53,816.34 is: 74,248.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,103.74 : 118,793.78 = 53,816.34 : x
  2. Step 2: Convert to fraction form
    86,103.74/118,793.78 = 53,816.34/x
  3. Step 3: Cross multiply
    86,103.74x = 118,793.78 × 53,816.34
  4. Step 4: Simplify right side
    86,103.74x = 6,393,046,454.37
  5. Step 5: Solve for x
    x = 6,393,046,454.37/86,103.74
  6. Step 6: Final answer
    x = 74,248.19

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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.