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Finding the Fourth Proportional to 151,410.99, 208,945.50 and 85,999.36

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Solution

The fourth proportional to 151,410.99, 208,945.50 and 85,999.36 is: 118,678.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,410.99 : 208,945.50 = 85,999.36 : x
  2. Step 2: Convert to fraction form
    151,410.99/208,945.50 = 85,999.36/x
  3. Step 3: Cross multiply
    151,410.99x = 208,945.50 × 85,999.36
  4. Step 4: Simplify right side
    151,410.99x = 17,969,179,158.84
  5. Step 5: Solve for x
    x = 17,969,179,158.84/151,410.99
  6. Step 6: Final answer
    x = 118,678.17

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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.