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Finding the Fourth Proportional to 352,611.93, 528,914.25 and 86,373.84

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Solution

The fourth proportional to 352,611.93, 528,914.25 and 86,373.84 is: 129,559.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,611.93 : 528,914.25 = 86,373.84 : x
  2. Step 2: Convert to fraction form
    352,611.93/528,914.25 = 86,373.84/x
  3. Step 3: Cross multiply
    352,611.93x = 528,914.25 × 86,373.84
  4. Step 4: Simplify right side
    352,611.93x = 45,684,354,803.22
  5. Step 5: Solve for x
    x = 45,684,354,803.22/352,611.93
  6. Step 6: Final answer
    x = 129,559.87

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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.