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Finding the Fourth Proportional to 111,253.95, 166,705.86 and 86,015.13

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Solution

The fourth proportional to 111,253.95, 166,705.86 and 86,015.13 is: 128,887.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,253.95 : 166,705.86 = 86,015.13 : x
  2. Step 2: Convert to fraction form
    111,253.95/166,705.86 = 86,015.13/x
  3. Step 3: Cross multiply
    111,253.95x = 166,705.86 × 86,015.13
  4. Step 4: Simplify right side
    111,253.95x = 14,339,226,219.66
  5. Step 5: Solve for x
    x = 14,339,226,219.66/111,253.95
  6. Step 6: Final answer
    x = 128,887.34

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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.