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Finding the Fourth Proportional to 352,655.60, 528,205.80 and 186,249.20

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Solution

The fourth proportional to 352,655.60, 528,205.80 and 186,249.20 is: 278,963.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,655.60 : 528,205.80 = 186,249.20 : x
  2. Step 2: Convert to fraction form
    352,655.60/528,205.80 = 186,249.20/x
  3. Step 3: Cross multiply
    352,655.60x = 528,205.80 × 186,249.20
  4. Step 4: Simplify right side
    352,655.60x = 98,377,907,685.36
  5. Step 5: Solve for x
    x = 98,377,907,685.36/352,655.60
  6. Step 6: Final answer
    x = 278,963.12

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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.