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Finding the Fourth Proportional to 133,978.68, 184,852.71 and 86,259.66

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Solution

The fourth proportional to 133,978.68, 184,852.71 and 86,259.66 is: 119,013.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,978.68 : 184,852.71 = 86,259.66 : x
  2. Step 2: Convert to fraction form
    133,978.68/184,852.71 = 86,259.66/x
  3. Step 3: Cross multiply
    133,978.68x = 184,852.71 × 86,259.66
  4. Step 4: Simplify right side
    133,978.68x = 15,945,331,914.68
  5. Step 5: Solve for x
    x = 15,945,331,914.68/133,978.68
  6. Step 6: Final answer
    x = 119,013.95

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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.