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Finding the Fourth Proportional to 133,718.40, 184,507.20 and 85,960.80

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Solution

The fourth proportional to 133,718.40, 184,507.20 and 85,960.80 is: 118,610.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,718.40 : 184,507.20 = 85,960.80 : x
  2. Step 2: Convert to fraction form
    133,718.40/184,507.20 = 85,960.80/x
  3. Step 3: Cross multiply
    133,718.40x = 184,507.20 × 85,960.80
  4. Step 4: Simplify right side
    133,718.40x = 15,860,386,517.76
  5. Step 5: Solve for x
    x = 15,860,386,517.76/133,718.40
  6. Step 6: Final answer
    x = 118,610.35

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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.