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Finding the Fourth Proportional to 158,534.78, 218,777.95 and 86,913.27

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Solution

The fourth proportional to 158,534.78, 218,777.95 and 86,913.27 is: 119,940.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,534.78 : 218,777.95 = 86,913.27 : x
  2. Step 2: Convert to fraction form
    158,534.78/218,777.95 = 86,913.27/x
  3. Step 3: Cross multiply
    158,534.78x = 218,777.95 × 86,913.27
  4. Step 4: Simplify right side
    158,534.78x = 19,014,705,509.94
  5. Step 5: Solve for x
    x = 19,014,705,509.94/158,534.78
  6. Step 6: Final answer
    x = 119,940.28

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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.