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Finding the Fourth Proportional to 352,611.20, 528,862.80 and 115,954.40

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Solution

The fourth proportional to 352,611.20, 528,862.80 and 115,954.40 is: 173,913.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,611.20 : 528,862.80 = 115,954.40 : x
  2. Step 2: Convert to fraction form
    352,611.20/528,862.80 = 115,954.40/x
  3. Step 3: Cross multiply
    352,611.20x = 528,862.80 × 115,954.40
  4. Step 4: Simplify right side
    352,611.20x = 61,323,968,656.32
  5. Step 5: Solve for x
    x = 61,323,968,656.32/352,611.20
  6. Step 6: Final answer
    x = 173,913.84

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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.